1.In spite of the hard test,they had good marks.->Although 2.If she doesn't study hard,she will fail the entrance exam->Unless 3.We last sent Peter a letter two weeks ago->we haven't 4."I have gone out for an hour"->The woman said 5.We are interested in walking in the rain->Hoang 6.It's very wonderful to travel to the countryside->traveling 7."How old is your friend's son"->I asked my classmate 8.It is bad for you to drive a car while driving->Driving 9.Earthquakes are not as dangerous as volcanoes Giúp mình với ạ!!Cảm ơn

1.Although the test was hard, they had good marks.

Inspite of+N/Ving=Although+S+V

2.Unless she studies hard,she will fail the entrance exam.

Unless=If...not

3.We haven't sent Peter a letter two weeks ago.

S+last+V2+O...=S+has/have+(not)+O...

4.The woman said that she had gone out for an hour.

Câu gián tiếp từ thì HTHT=>QKHT

5.Hoang and I are interested in walking in the rain. (câu này mình nghĩ đề sai nhé, mình làm theo suy nghĩ của mình thôi)

be interested in doing sth:thích làm gì

6.Travelling to the countryside is very wonderful.

It's+adj+to+V=Ving+tobe+adj

7.I asked my classmate how old his friend's son was.

Câu gián tiếp dạng câu hỏi từ thì HTĐ=>QKĐ

8.Đề sai

9.Volcanoes are more dangerous than earthquakes.

So sánh hơn

Dịch: Động đất không nguy hiểm như núi lửa=Núi lửa còn nguy hiểm hơn động đất.