People working 10 or 11 hours a day are more likely to suffer from health problems than _____who go off duty after eight hours.
New medicines and instruments ______ every day to extend life.
What I wanted to know was when and where the meeting ______.
If you go there alone after dark you might get _____. A. attacked and robbed B. attacking and robbing B. to attack and rob D. to be attacked and robbed
A red sky in the morning _____ to be a sign of bad weather.
The president _____ a cool reception when he visited London.