—I have got a headache.
—No wonder. You in front of that computer too long.
A. work B. are working C. have been working D. worked
—Ouch! You hurt me!
—I am sorry. But I any harm. I to drive a rat out.
A. didn’t mean; tried B. don’t mean; am trying
C. haven’t meant; tried D. didn’t mean; was trying
I got caught in the rain and my suit____.
A. has ruined B. had ruined C. has been ruined D. had been ruined
---It was really very kind of you to give me a lift home.
-----Oh, don’t mention it. I _____past your house anyway.
A. was coming B. will come C. had come D. have come
— Did you tidy your room?
— No, I was going to tidy my room but I visitors.
A. had B. have C. have had D. will have
With the help of high technology, more and more new substances in the past years.
A. discovered B. have discovered C. had been discovered D. have been discovered
