When did the classroom have a power cut？
This morning，while we ________ a physics lesson．（ ）
A．have hadB．were having
C．are havingD．will have
相关试题
Look! There ________ a photo of our English teacher in today's newspaper! （ ）
A．isB．areC．haveD．has
Here is Nancy's plan for one week during her summer holiday．What kind of plan is this？（ ）
A．A party plan．B．A trip plan．
C．An exercise planD．An eating plan
The research he devotes himself to the farmers have a better harvest is very important．（ ）
A．helpingB．to helpC．helpD．helped
How long can a person a shared bike（共享单车） for free in Nanjing？
For an hour．（ ）
A．keepB．getC．borrowD．lend
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