Water ____ be changed into vapour but it ____ be heated to its boiling point .
#89755
A
may ; can
B
can ; must
C
may ; needn''t
D
must ; may
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With all his money, he _________ worry about a little thing like 5 cents!
#86952
A
can
B
must
C
may
D
should
The officer demanded that such things ______from happening again.
#86715
A
prevented
B
prevent
C
be prevented
D
were prevented
—Perhaps John's not in.—______.Look，the light's on.
#89430
A
Yes，he can be at home
B
No，he couldn't go out
C
Yes，he must be at home
D
No，he needn't go out
-We want someone to design the new art museum for us.-_____ the young fellow have a try?
#89967
A
May
B
Shall
C
Will
D
Need