We are having a math lesson now, you muststop _________ music.

I’m going to Hangzhou for a holiday this weekend. — ___ you are there, could you buy me some green tea

ere abroad during the months when we were carrying out the investigation, or they __________to our help.

－Excuse me,are you and Simon in Class 2, Grade 7 －_________. He’s my classmate.

he field research will take Joan and Paul about five months; it will be a long time _______ we meet them again.