单项选择题
Everybody（）in the hall where they were welcomed by the secretary.
A.assembled B.accumulated C.piled D.joined
单项选择题 If my plan isn't（）of by the committee, all my work will have been wasted.
单项选择题 Our holiday plans（）because of transport strikes.
单项选择题 She can run 100 meters in 13 seconds without（）herself.
