I rang you several times yesterday but couldn’t .
The conference ______ in Beijing next week is bound to be a great success.
This problem is ______ his ability and 1 don't think he can solve it.
I was almost asleep last night when I suddenly heard someone ______ at the door.
It wasn't such a good job ______ she had read about in the advertisement.
She didn't go to the party last night, ______ she had to finish her term paper.