But the unpleasant feeling of coldness disappeared at the _______ of his students pouring out of their classroom to give him a warm, wordless welcome.
She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.
He didn’t do well _____ Chinese. He had some trouble ______ it.
Can you ______ the difference ______ the two phrases?
The _____ you study, the _____ you’ll be in it.
My sister doesn’t look ______ my mother, but she speaks ____ my father does.