We should spend as much time as we _______ over our lessons.
| A．go | B．can to go | C．can go | D．can going |
– How did Mary react to the bad news?
– Oh, she was filled with sorrow and ______ a sigh.
| A．let out | B．dropped out | C．tried out | D．gave out |
He was about half through his meal ______ a familiar voice came to his ears.
| A．why | B．where | C．when | D．while |
– What a heavy rain!
– So it is. We have to delay ______ the sports meeting until it is fine.
| A．to hold | B．holding | C．held | D．being held |
Having gone through several rounds of selection, the young man ______ gained a chance to perform in China Talent.
| A．constantly | B．unfortunately |
| C．eventually | D．temporarily |
– How’s your new class teacher?
– We ______ ask for a better one. All my classmates love him so much.
| A．shouldn’t | B．couldn’t | C．mustn’t | D．needn’t |