Though this question is very difficult，if you ________ trying you will find the right answer.
| A．keep up | B．keep on |
| C．keep out | D．keep off |
What __ public is concerned about is whether the scientists win be able to find _______ cram for the disease.
| A．the; a | B．the; / | C．/; a | D．/; the |
Alice was_________the letter from Tom, but it didn't reach her for some reason.
| A．expecting | B．waiting | C．waiting for | D．expected |
It ______ last night ______ Tom saw an interesting film in Dongfeng Cinema.
| A．is; that | B．was; that | C．was; which | D．was; who |
Only when class began ______that he had left his book at home．
| A．will he realize | B．he did realize | C．did he realize | D．had he realized |
— How was your job interview?
— Oh, I couldn’t feel ______. I hardly found proper answers to most of the questions they asked.
| A．better | B．easier | C．worse | D．happier |