1.You should brush your teeth after every meal.(brush) (vì should+v_inf)

2.My mother didn't watch TV last night.(not/watch)

3.The students is waiting for the teacher in the hall now.(wait) 

4.She would like telling me an interesting story.(tell)

5.Be careful ! The children are crossing the street.(cross)

6.Mr.Pike is going to come to the meeting tomorrow.(come)

7.They prefer writing to reading.(write)

8.Did you friend saw a doctor two days ago? (see)

9. Basketball was became very popular all around the world in 1990s.(become) (bị động)

xin hn để cày đoàn chúc em học tốt

`1.` brush

`->` should + V(inf) : nên làm gì

`2.` didn't watch

`->` last night: DH thì Quá khứ đơn

`=>` S + did not + V(inf) + O.

`3.` are waiting

`->` now : DH thì Hiện tại tiếp diễn

`=>` S + am/is/are + Ving + O.

`4.` to tell

`->` would like + to V(inf) : muốn làm gì

`5.` are crossing

`->` Be careful! : DH thì Hiện tại tiếp diễn

`=>` S + am/is/are + Ving + O.

`6.` will come

`->` tomorrow : DH thì Tương lai đơn

`=>` S + will + V(inf) + O.

`7.` writing

`->` S + prefer + Ving + to + Ving: Ai thích làm gì hơn làm gì

`8.` see

`->` two days ago : DH thì Quá khứ đơn

`->` Did + S + V(inf) + O?

`9.` became

`->` in 1900s : DH thì Quá khứ đơn

`=>` S + V2(ed/BQT) + O.