The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.
| A．since | B．when | C．unless | D．before |
--- Hi, Tom. Any idea where Jane is?
--- She _________ in the classroom. I saw her there just now.
| A．shall be | B．should have been | C．must be | D．might have been |
The house rent is expensive. I’ve got about half the space I had three years ago and I’m paying ______ now.
| A．as three times much | B．as much three times |
| C．much as three times | D．three times as much |
—Shall I give you a ride as you live so far away?
—Thank you，________.
| A．it couldn’t be better | B．of course you can |
| C．if you like | D．it’s up to you |
The population of Rui’an is ________ so rapidly as to cause concern of the whole country.
| A．expanding | B．exploring | C．extending | D．spreading |
Progress so far has been very good. ______, we are sure that the project will be completed on time.
| A．However | B．Otherwise | C．Therefore | D．Besides |