Today the forests are getting fewer and fewer. We must       down too many trees.
#40889
A
keep people from cutting
B
prevent people from cutting
C
stop people cutting
D
all the above
推荐题目
             ,we’ll go for a picnic next week. 
#41098
A
If weather permit
B
Weather permitting
C
Weather permitted
D
Weather permission
—_______ is the ruler? Is it black?—Yes, it is.
#41194
A
How
B
Who
C
What
D
What color
— ______ his bike is lost? — He has to go to school on foot. 
#40820
A
How about
B
What if
C
Can you tell me
D
I don’t know
Sorry, I haven’t      money      buy the new ipad.
#40759
A
such; that
B
too; to
C
so; that
D
enough; to