The Elephant and the Bird
1) as
One day an elephant was walking by the river. On
his way he saw a little bird. The elephant had seen
birds before. He liked watching them fly A
the river. They were much faster than he was. The
elephant B_ wanted to be able to move so
quickly.
But this bird was not flying C__. It was lying
on the ground with its legs in the air. It looked
tired. This was the first time the elephant had ever
seen a bird doing something so strange.
"What are you doing?” asked the elephant. "I am
holding up the sky,” the bird answered, “I heard
that it may fall today.” The elephant laughed.
"You? Holding up the sky? Look how big it is! It is
bigger D__ me. You couldn't even hold me up
with those thin legs!”
"These are the only legs I have,” said the bird,
"Maybe I cannot hold up the sky by E , but I
am doing what I can.”
2) often
3) than
4) myself
5) then
6) over
7) at all
. - Gv
, phóng
ra màn, ra. A.​

One day an elephant was walking by the river. On
his way he saw a little bird. The elephant had seen
birds before. He liked watching them fly A over
the river. They were much faster than he was. The
elephant B often wanted to be able to move so
quickly.
But this bird was not flying at all. It was lying
on the ground with its legs in the air. It looked
tired. This was the first time the elephant had ever
seen a bird doing something so strange.
"What are you doing?” asked the elephant. "I am
holding up the sky,” the bird answered, “I heard
that it may fall today.” The elephant laughed.
"You? Holding up the sky? Look how big it is! It is
bigger than me. You couldn't even hold me up
with those thin legs!”
"These are the only legs I have,” said the bird,
"Maybe I cannot hold up the sky by E myself , but I
am doing what I can.”

One day, the elephant was walking by the river when he noticed a small bird. The elephant had seen birds before and enjoyed watching them fly swiftly over the river. He admired their speed and wished he could move as quickly as they did. However, this particular bird was not flying like the others. It was lying on the ground with its legs in the air, looking tired.

Curiosity got the better of the elephant, and he approached the bird, asking, "What are you doing?" In response, the bird said, "I am holding up the sky because I heard it may fall today." This statement surprised the elephant, as he had never seen a bird doing anything like this before.

The elephant then chuckled and remarked, "You? Holding up the sky? Look how big it is! It is much bigger than me. You couldn't even hold me up with those thin legs!" The elephant doubted the bird's ability to hold up something as massive as the sky.

To this, the bird calmly replied, "These are the only legs I have. Maybe I cannot hold up the sky entirely, but I am doing what I can." The bird acknowledged its limitations but emphasized the importance of doing one's best.

Now let's analyze the options for the missing words:

1) as - This word is used to compare the bird's action of holding up the sky to its usual activity of flying. The sentence suggests that the bird is doing something different from what the elephant has seen before, indicating a comparison between the bird's usual behavior and its current behavior. Therefore, the correct answer is "as."

2) often - This word does not fit in the context of the story. The sentence doesn't mention anything related to frequency or how often the bird holds up the sky. Therefore, "often" is not the correct answer.

3) than - This word is used to compare the size of the sky to the size of the elephant. The elephant states that the sky is bigger than him, indicating a comparison between two things. Therefore, the correct answer is "than."

4) myself - This word does not fit in the context of the story. The sentence doesn't provide any information about the elephant doing something by himself. Therefore, "myself" is not the correct answer.

5) then - This word does not fit in the context of the story. The sentence doesn't indicate any specific time sequence or action. Therefore, "then" is not the correct answer.

6) over - This word is not the appropriate choice for the sentence. The sentence does not describe the bird holding up the sky over anything specific. Therefore, "over" is not the correct answer.

7) at all - This word does not fit in the context of the story. The sentence doesn't suggest any negative or denial. Therefore, "at all" is not the correct answer.

To summarize, the correct answers are:
1) as
2) often
3) than
4) myself
5) then
6) over
7) at all

These choices are based on the analysis of the story and the context of the sentences.