_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
He some French while he was away on a business trip in Paris.
| A．made out | B．picked up | C．gave up | D．took on |
Athens，________known as the birthplace of the Olympics，________the capital of Greece.
| A．is；is | B．不填；is | C．is；不填 | D．不填；不填 |
--Can I smoke here?
--Sorry, we don’t allow __________ here.
| A．people smoke | B．to smoke | C．people smoking | D．smoking |
— Is it good to look up every new word when I come across it in reading?
—No，you _____，because you are likely to guess the meaning from the context,
| A．don't have to | B．shouldn't | C．can't | D．mustn't |
---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?
---- Really? No _____ I haven’t seen him for a long time.
| A．have; doubt | B．has; wonder |
| C．have; wonder | D．has; choice |