The rapidly growing birth rate brings about a lot of environment problems, which the government is supposed to take _____.
| A．significantly | B．severely | C．earnestly | D．seriously |
It is quite clear ____ he won't see us.
| A．what | B．that | C．why | D．how |
1 feel that one of my main duties ______ a teacher is to help the students to become better learners.
| A．for | B．by | C．as | D．with |
___ he did it remains a secret.
| A．What | B．Whom | C．Which | D．How |
It was a pity that the great writer died _________his works unfinished.
| A．for | B．with | C．from | D．of |
That is not ____ I want.
| A．that | B．why | C．what | D．whose |