一Excuse me,may I ask you a question?一Sure,________ .A.go ahead B.you’d better not C.I hope so
— _______ classes do you have every weekday? —Seven classes.
—______ drive after drinking. It’s too dangerous(危险的). —OK. I won’t.
—What are you doing, Jack? —I am _______ my schoolbag, but I can’t find it.
—What is Lucy doing now? —She _____ a book.
—What class are they having? —Math. Their math teacher is _____ the classroom.