With the loud noise going on in the workshop, I can hardly on my lessons．
| A．put | B．rely | C．concentrate | D．center |
It was the long March Rocket 2F, as reported, sent Shenzhou VI spaceship into space.
| A．which | B．what | C．that | D．as |
Don’t leave the waterwhile you brush your teeth.
| A．run | B．running | C．being run | D．to run |
—May I tell this to my close friend?
—No, you. Never let anybody else know about it.
| A．needn’t | B．shouldn’t | C．mustn’t | D．can’t |
The world is changing fast. I strongly believe that one will easily fall behind he keeps on learning.
| A．unless | B．if | C．when | D．as |
His speech at the meeting was really wonderful, and it could never be any.
| A．best | B．better | C．worse | D．worst |