______that silver is not widely used as a conductor(导体)?
| A．Why is | B．Is it why | C．Why is it | D． Why it is |
Never Lisa would arrive but she turned up at the last minute.
| A．did we think | B．have we thought |
| C．we thought | D．we have thought |
- Was she badly hurt?
- Yes, each time she moved her leg, she a cry.
| A．broke out | B．took out | C．let out | D．kept out |
I always had doubts he would be the best man for the job , but now I don’t doubt he can do it.
| A．whether; whether | B．that ; if |
| C．if; whether | D．whether; that |
As teenagers, it is not until we are able to face difficulties bravely we are mature enough.
| A．which | B．when | C．that | D．whether |
a large salary rise already, Sarah is thinking of buying a new apartment.
| A．Receiving | B．Having received |
| C．received | D．To receive |