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3. When we ___from our day's outing came into the kitchen, we found dinner___.

a) returned, serving

b) having returned, served

c) returning, having served

4.___by his elbow, Mary listened to their talk.

a) supported

b) supporting

c) having supported

5.___their meal they went for a stroll in the park.

a) finishing

b) finished

c) having finished

6. Fruits ___in hothouses are not so rich in colour, taste and vitamins as fruits ___in natural conditions.

a) having grown, grown

b) grown, growing

c) growing, having grown

7.___in the reception room he thought over what he would say when he was asked into the office.

a) waiting

b) waited

c) having waited

8. She used to say sharp and ___words to him.

a) having wounded

b) wounded

c) wounding

9. I admired the grounds and trees ___the house.

a) surrounding

b) having surrounded e) surrounded

10 She looked at the scene ___to the innermost of her heart.

a) shaking

b) shaken

c) having shaken

I don't know

3. When we returned from our day's outing and came into the kitchen, we found dinner being served.

Explanation: The sentence is describing an action that happened in the past. In this case, "returned" is the correct verb to use since it shows that the action of coming back happened in the past. The second part of the sentence states "dinner being served," which indicates that the dinner was in the process of being served when they arrived in the kitchen.

4. Supported by his elbow, Mary listened to their talk.

Explanation: In this sentence, the phrase "supported by his elbow" is describing Mary's position or manner of listening. The past participle "supported" is used to show that the action of supporting happened before Mary listened to their talk.

5. Having finished their meal, they went for a stroll in the park.

Explanation: The sentence is describing an action that happened in the past. "Having finished" is the correct verb form to use because it indicates that the action of finishing the meal occurred before they went for a stroll in the park.

6. Fruits grown in hothouses are not so rich in colour, taste, and vitamins as fruits grown in natural conditions.

Explanation: "Grown" and "growing" are both used in the sentence, but with different meanings. "Grown" is used to describe the fruits that have already completed the process of growing, while "growing" is used to describe the fruits that are currently in the process of growing.

7. Waiting in the reception room, he thought over what he would say when he was asked into the office.

Explanation: The phrase "waiting in the reception room" describes the subject's state or position. The present participle "waiting" is used to show that the action of waiting was happening at the same time as the subject's thoughts.

8. She used to say sharp and wounded words to him.

Explanation: The word "wounded" in this context does not refer to a physical injury but rather to the emotional impact of the words. The past participle "wounded" is used to describe the words as the cause of the emotional impact.

9. I admired the grounds and trees surrounding the house.

Explanation: The present participle "surrounding" is used to describe the ongoing action of the grounds and trees being in a position around the house.

10. She looked at the scene shaken to the innermost of her heart.

Explanation: The past participle "shaken" is used to describe the subject's emotional state after looking at the scene. It indicates that the subject was deeply affected by the scene, reaching the innermost part of her heart.