1 . I arrived at Mr Li’s office, only ________________ (find) it was locked. (所给词的适当形式填空)

2 . It was a misunderstanding. I didn’t mean ________(offend) you. (所给词的适当形式填空)

3 . They were the first men ______ (land) on the moon. （所给词的适当形式填空）

4 . One afternoon, while attempting _________(get) into bed she collapsed from what was eventually discovered to be a heart attack. （所给词的适当形式填空）

5 . Does the way you thought of ______(clean) the river make any sense? (所给词的适当形式填空)

6 . Tom often pretends _________ (know) everything, but actually he is ignorant. (所给词的适当形式填空)

7 . I’d like to see Tom, for I have something urgent ______ (tell) him. (所给词的适当形式填空)

8 . I just can’t afford ________ (sign) up for classes in the nearby gym. (所给词的适当形式填空)

9 . Regular exercise and a balanced diet enable students ____________ (perform) well in study. （所给词的适当形式填空）

10 . After being criticized by his teacher, the boy made a resolution ______ (submit) his assignment on time. （所给词的适当形式填空）