45. The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
| A．have grown; are | B．has grown; are | C．has grown; is | D．have grown; is |
Tom knows little Japanese，so he can’t understand the _____on the bottle of the pills.
| A．explanations | B．instructions |
| C．descriptions | D．regulations |
—Sorry，do you mind if I smoke here?
—Yes，________.
| A．you could | B．go ahead |
| C．I do | D．my pleasure |
Nowadays, ___motorcycle has become ___important means of transport in many cities.
| A．a; the | B．\; an | C．the; an | D．\: the |
--- Jerry, do remember to take the medicine three times a day and stay in bed for two days.
--- ______, Doctor. I will do it as told.
| A．Got it | B．That’s right |
| C．That’s OK | D．I think so |
— It's Mary's own fault if she feels ________ at the party.
— She makes no effort to be friendly to people.
| A．cut out | B．stood out | C．left out | D．made out |