I still remember the college and the teachers ________ I visited in London years ago.
A. what B. who C. that D. which
The people in Ya'an have met lots of difficulties, but they haven't ________ hope.
A. picked up B. given up C. looked for D. waited for
I'm surprised to hear from her. ________, we last met ten years ago.
A. On one hand B. That is to say
C. Believe it or not D. In other words
Thanks to the Internet, different kinds of information ________ in a short time.
A. can be learned B. has been learned C. can learn D. has learned
-- Our school bus will leave at 8 o'clock tomorrow. Don't be late.
-- OK. I will be there ten minutes________.
A. sooner B. slower C. faster D. earlier
The rivers will become dirtier and dirtier ______ we take action to protect them.
A. since B. if C. until D. unless
