—Don’t stop trying ________ your dream comes true.

—Yeah.

A. when B. if

C. until D. as

—What were you doing when he ________“hello”to you?

—I _______in front of the blackboard.

A. was saying； read B. was saying； was reading

C. said； read D. said； was reading

—Do you think ________will be robots in the school in 20 years?

—No,________.

A. there； there won’t B. they； there will

C. there； they won’t D. they； there wouldn’t

—Did you hear my answer to this question , Sam?

——Yes, Sir. Bob it to me after you.

A. talked B. said

C. repeated D. spoke

—Has your friend completed his design?

—Not yet. He _______ on it last night.

A. worked B. has worked

C. is working D. was working

— How_______ the medicine tastes!

—Yes. But the medicine will really work soon after you take it.

A. nice B. sweet

C. delicious D. terrible

I didn’t have _____ to say, so I said _____.

A. something, anything B. anything, nothing

C. anything, something D. nothing, something

— Excuse me, is this seat taken?

—_____. That man got his books and left a few minutes ago.

A. I’m afraid so B. I don’t know

C. I don’t think so D. I hope not

— When do you usually take a walk?

—______ the morning.

A. In B. On

C. At D. For

——It’s a secret between us. Don’t tell anybody.

——No, .

A. I do B. I don’t

C. I will D. I won’t