She got to know Sam while______ the new P＆T products release conference.
A. attending
B. to attend
C. attend
D. attended
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_____ in the queue for an hour, she suddenly realized that she had left her passport at home
A. To wait
B. have waited
C. Having waited
D. To have waited
To put everything in order,Mary put away her_________ in the upstairs room.
A. summer'sclothes
B. summer clothes
C. summers'clothes
D. summer cloth
Hardly________ when a loud explosion was heard
A. the train had started
B. the train had been started
C. had the train strated
D. did the train start
Only after I got to school over again______ her.
A. that I saw
B. I could see
C. I did see
D. did I see
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