You _________ sleeping on the train yesterday.[ ]
A. are
B. was
C. were
答案：C
Mario used to _____________ in the morning.
A．practiceswimming
B．practicingswimming
C．practiceswim
D．practicesswimming
领导班子（）是职责范围内的党风廉政建设第一责任人。
