Chia động từ trong ngoặc ở đúng thì

            Chia động từ trong ngoặc ở đúng thì 
1. Mrs Green (take) ..................... Alice to the dentist many times.
2. Hurry up!  The train (come) ...................... in. 
3. He (sleep) .................. so he did not cinderstand what you said to him.
4. An economic arisis often (follow) ................. the war. 
5. What .............. you (do) ............... at 7 p.m yesterday? 
6. We didn't recognize him He (change) ............... a lot.
7. He discovered to his horror that he (eat) .................. a fly.
8. Where ............. you (spend) ................. your holiday last year? 
9. He (do) .................. nothing be fore he saw me.
10. All of them (sing) ....................... When I come.