Some girls get sick after they try so hard to lose ________ weight．

1. A.
   a
2. B.
   the
3. C.
   /
4. D.
   an

Most people get sick ________ the bad weather.

A. because

B. as

C. because of

D. since

Don’t get stressed _____. It will make you sick.

1. A.
   out
2. B.
   in
3. C.
   on
4. D.
   ill