4.Unfortunately I've got to work late tonight.
=>I wish i get to work early tonight

29.c

30.b

1. i wish i hadn't heard that.

=> i'd rather you hadn't told me that

2. Everyone wished they had listened more carefully to the lecture.

=> everyone regetted not listening more carefully to lecture.

26.b

27.d

28.a

I would rather be better for you not stay long.

22.d

23.a

24.d

25.a

Gọi quãng đường từ nhà đến trường của bạn học sinh là x km(x > 0)

19.d

20.a

21.d