Not until that day _____ the importance of good manners in a job interview.

（ ） weather may be too hot to the tourists.

I cannot tell the_____difference between the twins.

The disabled children need many things, but（ ）, they need love．

After （ ） the numbers in every possible combination, we finally hit on a solution.

The grain output of this year is much higher than _____ of last year.

The authorities wouldn’t （ ） us permission to fly all the way down to San Francisco.

We were disappointed yesterday because it wasn’t such a good dinner （ ） she had promised us．

—Shall we invite Tim? —No， it’s too late to invite any more people. _____， he hates parties， you know.

Her passionate voice was always influential and （ ）.

Any student who_____his homework is unlikely to pass the examination.

Let’s read the novel together, （ ）？