Question

[ngoc nhi]

I. THÌ & THỂ CỦA ĐỘNG TỪ - Chia các động từ trong ngoặc để hoàn thành câu.

1.    Over the last one hundred years, the world temperature ___________________________ (rise) by 1⁰C and this really worries scientists.

2.    I ______________________________ (start) collecting stamps five years ago  and so far I _________________________ (collect) over two hundred.

3.    The nomadic child ___________________________ (fall) off the horse while he ___________________________ (ride) down a hill.

4.    If this factory stops dumping untreated waste into the river, its water ______________________ (be) safe to drink again.

5.    Our environment ___________________________ (pollute) so seriously if people were aware of the environmental protection

làm ơn giup mình với mng ơi 

Answer 1

[Xuan Mai]

1-      has risen

2-      started  -  have collected

3-      fell  -  was riding

4-      will be

5-      wouldn’t be polluted