【单选题】
We found him ___________ in the laboratory.
【单选题】
When we arrived at the airport, we found our flight ________.
【单选题】
12. When we arrived, we found the meeting room crowded with ____ students.
【单选题】
When we came back, he found his bicycle ____
【单选题】
_____ that we couldn’ t catch up with him.
【单选题】
Although Jack made a foolish mistake, we __________ at him.
②
oughtn’t to have laughed
【单选题】
When Sarah and I ____ on an article for the school newspaper, we found it difficult to work together.
【单选题】
20.When he was in_____ hospital, we all went to _____ hospital to visit him .
【单选题】
After the experiment in the laboratory, they began _________ their reports.
【单选题】
1. I help him ____ he helps me. We help each other.