A.A. has been existed
B.B. has existing
C.C. being existed
D.D. has existed
第1题
Lowering personal production of waste___everyone over the past decade.
A. benefited
B. has benefited
C. benefits
D. benefiting
第2题
Let everybody___something to reduce environmental pollution.
A. do
B. to do
C. doing
D. do it
第3题
ng carbon footprints.
A. will often see
B. often see
C. are often seeing
D. have often seen
第4题
___good care, the electrical devices in the area all work well.
A. Regarding
B. Thanks to
C. Like
D. Thanks for
第5题
If the lights were on, they___have been at home.
A. must
B. need
C. shall
D. would
第6题
The guest presented ______ that a staff in the hotel had stolen her pack.
A.proof
B.proofs
C.prooves
D.proofes
第7题
The manager demands that I meet five ___ at the exhibition tomorrow.
A.Australians
B.Australia
C.Australias
D.Australian
第8题
Please fill___the form. before you check ___.
A.at; out
B.to; in
C.out; in
D.on; in
第9题
A.all are
B.are all
C.both are
D.are both
第10题
is going to travel around the earth ______.
A.each 80 minute
B.each 80 minutes
C.every 80minutes
D.every 80 minutes
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