A.A. producing
B.B. has produced
C.C. will produce
D.D. produces
第1题
When you visit the room, the electronic facilities in it can___and recognize you.
A. interview
B. identify
C. instruct
D. introduce
第2题
You___have come to the concert. It was excellent.
A. may
B. need
C. ought to
D. must
第3题
in the last twenty years.
A. takes
B. took
C. have taken
D. should taken
第4题
It will not be long before everyone___the importance of computer skills at work.
A. will see
B. have seen
C. sees
D. would see
第5题
The problem of global warming___for decades.
A. has been existed
B. has existing
C. being existed
D. has existed
第6题
Lowering personal production of waste___everyone over the past decade.
A. benefited
B. has benefited
C. benefits
D. benefiting
第7题
Let everybody___something to reduce environmental pollution.
A. do
B. to do
C. doing
D. do it
第8题
ng carbon footprints.
A. will often see
B. often see
C. are often seeing
D. have often seen
第9题
___good care, the electrical devices in the area all work well.
A. Regarding
B. Thanks to
C. Like
D. Thanks for
第10题
If the lights were on, they___have been at home.
A. must
B. need
C. shall
D. would
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