_____ you‘re early you can't be sure of getting a seat.

A. so B. if

C. for D. unless

A. enough tired to go to bed B. too tired to go to bed

C. so tired that he went to bed D. very tired, he went to bed

A. hardly B. the minute C. no sooner D. at once

A. when B. where C. though D. because

A. I have helped enough.

B. No more help is needed.

C. No, thanks, I'm quite full.

D. Please pass me the helping.

A. What's the matter?

B. What can I do for you ?

C. Just a minute, please.

D. Can I help you?

A. Yes, I'11 do it.

B. It's nothing.

C. That's all right.

D. Not at all.

A. I'm sorry. He's at a meeting now.

B. I am. Speak, please.

C. Hello. Who're you, please?

D. Hello. Thank you for calling.

A. Well, you'd better keep an eye on your wallet.

B. Why don't you stay at home and watch your baby?

C. By the way, what about your plan to visit your parents?

D. Take the train? You're a fool.

A. number

B. size

C. amount

D. screen