_____ the secret of nature, the young scient
ist has little time for ent
ertainment．
| A．Devoted to bring up |
B．Devoted himself to bring up |
| C．Devoted to bringing up | D．Devoting to bring up |
At Sam’s birthday party he had many guests, who were ________friends of his.
| A．mostly | B．usually | C．specially | D．nearly |
I often dream of jogging out with snow _______ the ground.
| A．covering | B．covered | C．cover | D．to cover |
_______ he was seriously ill, I wouldn’t have told him the truth.
| A．If I knew | B．If I know | C．Had I known | D．Did I know |
Some people think _______about their rights than they do about theirresponsibilities.
| A．so much | B．much more | C．too much | D．much too |
—Haven’t we met before?
—_______.
—But your face seems familiar to me.
| A．No way | B．I’m afraid so |
| C．It’s up to you | D．I don’t think so |