_______! Keep away from the machine. It's dangerous.

A. Look first

B. Be careful

C. Don't rush

D. Be quiet

To keep away from germs, we must not spit ______.

A. in danger     B. in need         C. in public

Tom, keep away from the fire, ________ you will get burnt.

1. A.
   and
2. B.
   so
3. C.
   or
4. D.
   but

To keep away from germs, we must not spit ______

1. A.
   in danger
2. B.
   in need
3. C.
   in public