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The more teenagers watch actors smoking in films, the more ______ they are to take up the habit of smoking themselves.

The US is about the same size as China, but its population is five times_    ___.

_    ____, the boys were shouting and singing.  

Exercise is _____as any other to lose unwanted weight.  

—Do you think him naughty enough?
—I’m afraid he’s ___than naughty.       

.—Why don’t you like the shirt?
—Its neck is not big for me at all. Have you got a shirt of this kind with _____ neck?

It takes a long time to go there by train; it's ________by road.

－I don’t want to move to that city. It is heavily polluted.
－Pollution is common. The city here is       .

Considering the fact that we are short of money, we’ll buy this mini car, although it is         .

When we practise speaking, topics for conversation should be ________ to the experience and interests of the students.