–Hi, Kate! --Hi, Mary. I ______ you are here. A. don’t know B. don’t think C, think D. didn’t know
_____ you make a plan for study, you have to follow it.
The science fiction ______ last month and now it is popular with children.
No one can be sure in a million years.
____ students are practicing ___ English with each other at the English corner.
My father served in the army in _______ when he was in _____.