If you ____________ stop smoking, you can only expect to have a bad cough.
__________,many people go in for them and benefit from them.
Although __________ to be the best in a recent science competition, the students remain hard-working.
-You aren't looking well. Anything the matter? -I've been surfing the net too long. I'm a bit tired. I can hold on,__________.
__________ life is full of ups and downs, where there is life, there's hope.
__________ time is pressing, we senior three students should work extra hard and stick it out to the end.