________ you ________ the Space Museum?
A. Have; been    B. Have; ever been to     C. Have; ever gone to

If he _____ his homework, he’ll go to the movies tonight.
A. will finish         B. finish             C. finishes

— Could you please do some shopping for me, Mary?
— Sorry, I ______ my homework.         

My brother and 1     in Yinchuan since 1997.

—When will he leave for Shanghai?
—As soon as he _ his work.

The sense of happiness will increase if you________ what you like to do.
A. do                     B. did                 C. will do

The girl with two cats      in the yard when the earthquake happened.
A. was playing   B. is playing   C. are playing   D. were playing

----Oh, you are here. I’m looking for you all the morning.      ？
----To the library.

– What was the terrible noise yesterday evening? – The neighbors ________ a party.

The children _______ a PE class on the playground when it suddenly began to rain.