Tick(a или b? ) the correct sentence: 1.a)yesterday was more hot than today.b)yesterday was hotter than today.2.a)she's taller than her brother.b)she's taller that her brother.3.a)i'm the most young in the class.b)i'm the youngest in the class.4.a)last week was busier than this week.b)last week was busyer than this week.5.a)he hasn't got any sisters.b)he doesn't got any sisters.6.a)do you have any bread? b)do you got any bread? 7.a)my homework is the baddest in the class.b)my homework is the worst in the class.8.a)this exercise is the most difficult in the book.b)this exercise is most difficult in the book.

1.b) yesterday was hotter than today.
Explanation: To compare two things, we use the comparative form of the adjective, which is "hotter" in this case.

2.a) she's taller than her brother.
Explanation: When comparing two people or things, we use the comparative form of the adjective, which is "taller" in this case.

3.b) i'm the youngest in the class.
Explanation: When comparing ages or positions, we use the superlative form of the adjective, which is "youngest" in this case.

4.b) last week was busier than this week.
Explanation: To compare two periods of time, we use the comparative form of the adjective, which is "busier" in this case.

5.a) he hasn't got any sisters.
Explanation: The correct negative form of "have" is "have not" or "haven't got" in this case.

6.a) do you have any bread?
Explanation: The correct form of "have" in the question is "do you have," not "do you got."

7.b) my homework is the worst in the class.
Explanation: When comparing quality, we use the superlative form of the adjective, which is "worst" in this case.

8.a) this exercise is the most difficult in the book.
Explanation: When comparing difficulty, we use the superlative form of the adjective, which is "most difficult" in this case.