chuyển câu cho trước thành câu có sử dụng liên từ phù hợp:
 He took the exam.He went on a trip to Nha Trang.

It's ten years since I left Japan

My father has been washing his car since the morning

Tom started collecting stamps when he was a kid

I arrived in Tokyo two months ago

He has been dead three years ago

she has been planting roses since half past seven

1.If there (not be)......weren't......oxygen on the earth,life as we know(not exist)...wouldn't exist.........

2.Most people know that oil floats on water.If you(pour)....pour...oil on water, it(float)....floats......

3.Lan didn't study hard so she failed the test.However, if she (study).......has studied......hard,she(pass)...would have passed........it.

4.It's been a long drought.It hasn't rained for over a mounth.If it(not rain)..doesn't........soon,a lot of crops(die)......will die.......If the crops (die)....die......,many people(go)..will go..........hungry this coming winter.

5.Jane doesn't know how to dance .She wishes she (know)...knew.....how to dance.

it

it

its

her

yours

yours

our... theirs

him

our

me

If he hadn't parked in wrong place, he wouldn't have been fined