We are confident that the environment________by our further efforts to reduce pollution. (2013·辽宁，30)
#99433
A
had been improved
B
will be improved
C
is improved
D
was improved
推荐题目
The book has been translated into thirty laguages since it ____ on the market in 1973.
#101181
A
has come
B
comes
C
had come
D
came
(2013·南昌10所省重点中学二模)Mary ________ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
#99599
A
has served
B
had served
C
is serving
D
served
-- Hi, Samantha! When did you arrive in Leeds? --- Last week, I ___________ a different culture since then.
#101020
A
was experiencing
B
will be experiencing
C
have been experiencing
D
had been experiencing
I feel so excited! At this time tomorrow, I ________ by camel with local guides in Northern Africa.
#101224
A
travel
B
travelled
C
will be travelling
D
have travelled
Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown.
#102851
A
lived
B
has lived
C
had lived
D
was living