1. My teacher asked why Thu hadn't taken part in English club the day before.

( S + asked/ wondered/ wanted to know + WH + S +V…

Lùi thì: Yesterday --> The previous day, the day before; didn't you take ( Quá khứ đơn) ---> hadn't taken (Quá khứ hoàn thành).

2. If you are not hard-working, you 'll be sacked in this company.

( Nếu bạn không làm việc chăm chỉ, bạn sẽ bị sa thải trong công ty này.)

3. I wish (that) I pronounced English sounds correctly.

( S + wish(es) + (that) + S + V-ed - Cấu trúc wish ở hiện tại)

4.  Japanese cars are the quickest car in the world.

( Cách chuyển đổi so sánh hơn sang so sánh nhất: 

N1 + in... + comparative adjective + than + N2. ---> N2 + be + the + superlative adjective (N) in... )

5. Although Tom was a poor student, he studied very well.

( In spite of N/ Ving... ---> Although S + V/ be + N)

Đáp án:

my teacher suggested Thu that she should take part in English club the previous day

If you aren't hard-working ,you'llbe sack in this company

i wish i could pronounce English correctly

No cars in the world runs as quickly as Japanese ones 

although Tom is a poor student ,he studied very well