-- I'd like to invite you to a party tomorrow evening.
-- Thank you, but ______ I'll be free I'm uncertain.
| A．while | B．if | C．when | D．whether |
So many directors ________, the board meeting had to be put off.
| A．were absent | B．been absent |
| C．had been absent | D．being absent |
Most of the problems ______, he has a tight schedule every day.
| A．remaining unsettled | B．remained unsettled |
| C．remaining unsettling | D．remained unsettling |
___ darker now, we had to stay in the village for the fight.
| A．It was getting | B．It getting | C．Getting | D．Being |
______, the library was closed.
| A．Sunday | B．Being Sunday | C．It to be Sunday | D．As it was Sunday |
______, the concert began.
| A．The listeners having taken their seats | B．Having taken their seats |
| C．Having taken their places | D．Taking their seats |
American women usually consider their best friend as someone ________ they can talk frequently.
| A．who | B．whom | C．about which | D．with whom |
______ these models several were exciting, ____ of them exactly right．
| A．Of; none of which | B．Among; none of which |
| C．Of; none of them | D．Among; none of them |
Adam left word with my wife ______ he would call again in the afternoon.
| A．who | B．as | C．that | D．which |
In the garden there are a lot of flowers ______ I don’t know the names.
| A．of which | B．from which | C．to which | D．about which |
The project__________, my colleagues and I had a party to celebrate it.
| A．completed | B．was completed | C．had completed | D．completing |
With his mother him, he is getting on well with his work.
| A．help | B．to help | C．helping | D．helps |
___, the car started.
| A．The signal giving | B．The signal is given | C．The signal given | D．Having given the signal |
The road becomes so crowded during rush hours, ______ it becomes a very slow route.
| A．which | B．when | C．where | D．that |
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