— I wonder if I could take a few days off work. — ________ .A.I’m sure you could leav

There are scientific ways ________ which man solves problems.

A. in

B.with

C.at

D.on

— Let’s have a party in our department.

— _________ .

A.All right

B.Good idea

C.Very good

D.I like

— When will the performance begin?

— ________ .

A.About one hour

B.After one hour

C.In one hour

D.At one hour

— I left my umbrella in my room. Wait while I go back to get it.

— ________ .

A.Don’t be afraid, it will be fine

B.Never mind, the weather will be OK

C.Don’t bother, it will clear up by noon

D.No problem, you can go