-Must I take part in the activity?-No, you _________.A. mustn’t B. don’t C. don’t have to
--- _____ you_____your room yet? --- Yes. I_________it a moment ago.
The boy was seen_______the plano yesterday evening.
--- Did you find your watch yesterday? --- No,I didn’t find________,but I’ve bought_______.
You_______ to the party if you're so busy.
_______ is said that _______ tourists visit the park every day .