When your friends begin to flatter(奉承)you on ____________, it’s a sure sign you’re getting old.
All the students are talking and laughing in the classroom and it’s______ .
MR. Lin’s son is pretty good_____ drawing pictures and won many prizes.
Hurry up, or______ won’t get to school on time.
Can you tell me _____________________?
Mary ______ in Beijing since 2008.