The increase of the number of the students makes the limited computers not ______ to each student.
—What were you doing when she dropped in? —I for a while and_________ some reading.
It was not a good idea to go skating. You __________your leg.
Although motor car has been with us for almost a century, I have never been able to drive __________American one.
Nothing__________ after the terrible fire which had been caused by someone smoking in bed.
If you want to see a doctor, fix the date with him ahead of time. This is a common ___________ in the USA. A. habit B. law C. rule D. custom