We can never expect____bluer sky unless we create____ less polluted world.
A.a; a | B.a; the |
C.the; a | D.the; the |
If better use is __________ of your spare time, you'll make great progress in your study.
A.spent | B.taken |
C.given | D.made |
English is difficult __________ well in a short time.
A.to learn | B.learning |
C.to be learned | D.learn |
Paul doesn't have to be made __________. He always works hard.
A.learn | B.to learn |
C.learned | D.learning |
The careless driver is __________ for the traffic accident that __________ yesterday.
A.to blame; happened | B.to blame; was happened |
C.to be blamed; was happened | D.to be blamed; happened |
It is often __________ that human beings are naturally equipped to speak.
A.said | B.to say |
C.saying | D.being said |