The class will _______on some important matters.
____ is certain, though, is that the mystery of Tutankhamun’s tomb has never been fully explained.
Some time after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.
London people always take umbrellas with them, just _______ it rains.
Experts suggest that teenagers spend at least 30 minutes exercising, five times a week. Walking and riding your bike _____ , and ______.
As a matter of fact, _____ of sleep can make you look tired, and even _____ putting on weight.A. lose; cause B lost; result from C loss; result in D losing; lead