A.If I come home late, you’d better take the keys.
B.You’d better take the keys in case I come home late.
C.You'd better take the keys as I possibly come home late.
D.I'll probably come home late so that you’d better take the keys.

A.The
B.he tried
C.worst
D.before

A.The
B.he tried
C.worst
D.before

A.children’s program
B.called
C.was seeing
D.in 1989

A.student
B.in
C.are
D.at

A.I don't know. I just don’t think it’s for me.
B.You’re talking nonsense!
C.Yes, let's.
D.I can’t agree with you more.

A.I don't know. I just don’t think it’s for me.
B.You’re talking nonsense!
C.Yes, let's.
D.I can’t agree with you more.

A.Maybe you should take a rest.
B.Not very well. Thanks.
C.You aren’t going to the doctor’s.
D.Maybe I’m going to the doctor’s.

A.Certainly!
B.Just for fun.
C.The same to you.
D.You’re welcome.

A.The teacher has done his best to help all students, then, none of them made any effort on their part.
B.Although the teacher has done his best to help all students, none of them made any effort on their part.
C.Because the teacher has done his best to help all students, none of them made any effort on their part.
D.If the teacher has done his best to help all students, none of them made any effort on their part.