Swimming alone ___be ____dangerous. Do be careful.
| A．need; highly | B．may; high | C．can; highly | D．can; high |
—Do you still often go to the cinema?
—Not as often as I ______.
| A．used to | B．have to | C．was | D．do |
Chongqing is ______ most beautiful mountain city and I’m sure to come for ______ second time.
| A．the; a | B．a; a | C．the; the | D．a; the |
—I just received a letter from one of my old school friends.
—______
| A．How come? | B．You bet. | C．Congratulations! | D．That’s nice. |
A computer can only do ______ you have instructed it to do.
| A．how | B．after | C．what | D．when |
---- I’ve been told that you are not content with your present job.
---- Yeah. I am looking for a job _____ I can put my talent to good use.
| A．which | B．where | C．when | D．why |