求解答ing```

题目

求解答ing```
1、I'm leaving now .
_____you turn off the lignts.
A To make sure B Make sure CMade sure D Making sure
2、________?
He thinks China is great.
A what does your father think of China B what does your father like in china
C does your father like China D how does your father think of China
3、Peter is busy ____at school ,but he never forgets ___exercise every day.
A working;doing Bworking;to do C at work;doing

答案

B——祈使句（make sure ——确信：有把握）
A——what do you think of.（你认为.怎么样）
B——be busy doing sth =be busy to do sth （忙于做某事,题中给的是doing的形式）
没有be busy at 的句式
forget to do sth 忘记要做某事 forget doing sth 忘记做过某事
明白了吗?