Dr Yuan makes______ possible______ one-third more of the crop in the same fields.
| A．it; produce | B．it; producing | C．it; to produce | D．it; produced |
Many difficulties have ______ as a result of the overuse of coal
| A．risen | B．arisen | C．raised | D．arose |
There is no doubt _____ she will be able to repay the money on time.
| A．that | B．which | C．whether | D．why |
_______ his scientific work, he has no time to care for his family affairs, which his wife always complains about.
| A．Devoting to | B．Devoted to | C．Being devoted with | D．Devoted with |
- ______ Tom to be fit for the office, the boss ______ taking him on.
| A．Consider, considered | B．Considering, considering |
| C．Considering, considered | D．Considered, considering |
No sooner _____ the news than they rushed out
into the street.
| A．they heard | B．they had heard | C．did they hear | D．had they heard |