B. ought to know it can be harmful
C. have to cover it with water only
D. should keep air away from it
( )4. We must be careful with fire, or it ______.
A. can be
B. warms our houses
C. might burn us
D. will help us
( )5. What is the main idea of the passage?
A. Fire can help people in many ways.
B. Fire can be both helpful and harmful.
C. Fire can burn things and people
D. We must be careful with matches.
DBCCD DCABC CBBCD C B C D D
1.C 2.D 3.D 4.C 5.D
1.B 2. C 3.A 4.D 5.C
1.A 2.C 3.B 4.A 5.D 6.D 7.D
1.A 2.C 3.D 4.C 5.B