Will you go to Lisa's housewarming party next Sunday？
Well， if I ， I will go on time．（ ）
A．inviteB．will invite
C．am invitedD．will be invited
Becky won't let Joe down if he ______ her a hand in tomorrow's competition．（ ）
A．givesB．giveC．gaveD．will give
Lucy，could you please help me_______ the map on the wall？ We need it now．（ ）
A．put downB．put onC．put offD．put up
Is this photo taken in Tibet？
Yes，you can see beautiful snow mountains in the _______of the photo．（ ）
A．expressionB．background
C．introductionD．shape
What were Helen and Sally doing when it began to rain heavily？
Helen was sleeping _______Sally was reading a magazine．（ ）
A．whileB．untilC．beforeD．after
Mum，_____ I go out to watch a movie？
Yes，you can．But you must finish your homework first．（ ）
A．mustB．needC．willD．may