---Is that your crayon? ---_____, it _____. A. No ; is B. Yes ; isn’t C. No ; isn’t
This old woman _____ have food.A.did B. didn’t C. don’t
When did they _____ ?A. come B. came C. comes
What _____ to you?A. happen B. matter C. happened
What did you _____ ?A. saw B. see C. bought
I usually _____ to the zoo at the weekend.A. went B. go C. came