－Jack, will you be home ________ to see the children before they go to bed?

－No problem.

[　　]

A．on time　　B．in time　　C．at time

You can see Mr Smith if there is a sign “________” on the door of his shop.

[　　]

A．NO SMOKING

B．THIS SIDE UP

C．BUSINESS HOURS

They went out of the room as quickly as they could ________ forgot to turn off the lights.

[　　]

A．and　　B．but　　C．or

－This was the man ________ helped me when I was in trouble yesterday afternoon.

－I must thank him.

[　　]

－Excuse me, what did you say you would like to do, Miss White?

－I said I'd better go back to the office. I ________ someone this afternoon.

[　　]

－How can a person go scuba diving(潜水)?

－Because there is a kind of machine allowing him ________ under the water.

[　　]

－Shall we go to the computer room? You can teach me ________ the Internet.

－That's a deal.

[　　]

－Where is Haikou, do you know?

－Yes. It's the capital of Hainan Province. It's ________ the northeast of the is land.

[　　]

－Do you know anything else about the country of Singapore?

－Let's see ________ we can find some information about it on the Internet.

[　　]

－What is the city Beijing like?

－Oh, it's a pretty city ________ a lot of interesting places. It's educational to visit there.

[　　]