-Are you coming to my birthday party?-__________
I have been ______ English _______ ten years. A. study; for B. studying; since C. studying ; for
He _____ when the UFO arrived. A. was sleeping B. were sleeping C. has slept
Why not _____ boating with us in the park? A. to goB. goingC. go
I hope we will have _______ people and _______ pollution. A. fewer, less B. fewer, fewer C. less, less
I don’t know if he________ to the park tomorrow. If he ________, I won’t go, either. A. goes, goes B. will go, doesn’t go C. will go, won’t go