She _________the sign language before she served as a volunteer to help the deaf.
A. learns B. has learned
C. was learning D. had learned
The world today _____ different without the amazing discoveries produced by great scientists.
A. were B. had been
C. would be D. would have been
–Peter, do you know how to download the new software?
–Certainly. I _____ you the steps.
A. show B. am showing
C. will show D. have shown
The singer’s music video _____ nearly 9 million times since it was posted on the Internet four weeks ago.
A. viewed B. was viewed
C. has viewed D. has been viewed
In front of the farmhouse________.
A. lay a peasant boy B. laid a peasant boy
C. lie a peasant boy D. did a peasant boy lie
—Don’t you feel surprised to see Bruce at the meeting?
—Yes, I really didn’t think ______ here.
A. he has been B. he had been
C. he would be D. he would have
