If we keep wasting so much energy, ________are that our oil wells will dry up and the environment will be destroyed.
#11636
A
problems
B
difficulties
C
questions
D
chances
推荐题目
—How dangerous it was!—Yes, but for the passer­by's quick action, the girl ________.
#11070
A
was drowned
B
could have been drowned
C
had drowned
D
should be drowned
______ the students in our class is 50 and _______ them study very hard.
#14367
A
The number of; the number of
B
A number of ; the number of
C
The number of; a number of
D
A number of; a umber of