___ new products have been successfully made in the factory.
| A．A great deal of | B．A number of | C．The number of | D．A great amount of |
Look out! Don’t get too close to the house________ roof is under repair.
| A．which | B．its | C．whose | D．who |
Though he failed in the experiment again and again, he didn’t______, and at last, he made it.
| A．lose his heart | B．lose heart |
| C．break his heart | D．make up his mind |
Only in this way_______ finish the work ahead of time.
| A．they can | B．they can do | C．can do they | D．can they |
--Do you know the man _______ I shook hands just now?
--Yes, I know him. He is a famous actor.
| A．whom | B．who | C．with whom | D．with who |
At present,_____ number of students are near-sighted and, what’s worse, _____number of them is increasing.
| A．a; the | B．a; a | C．the; the | D．the; a |