Everyone should _______________ the environment.
#66667
A
make a contribution to protect
B
make contribution to protecting
C
contribute in protecting
D
make contributions to protecting
推荐题目
—It’s too hot. ---Let’s open the windows to allow the air to_________.
#70489
A
pass
B
cross
C
circle
D
circulate
____, all the students passed the entrance examination.
#65714
A
Much to the teacher’s satisfaction
B
To the teacher’s much satisfaction.
C
Much to the teacher’s satisfactory.
D
To the teacher’s great satisfactory
Some of the students have already learned enough English to _______a conversation with an English speaker.
#83196
A
go on (vi.)
B
carry on (vt. Vi.)
C
keep on
D
hold on
They began to think about what use could be ______ such materials.
#71750
A
made up
B
made from
C
made out
D
made of