Paper produced every year is ______the world’s production of vehicles.
A. the three weight of
B. three times as heavier as
C. three times the weight of
D. as three times as heavy as
We had a long way to go, and the snowstorm ________ our difficulties.
A. referred to B. added to
C. belonged to D. turned to
--May I open the window? It’s too hot.
--_____________.
A. It’s your turn. B. You have got it.
C. Go ahead. D. Hold on.
John began to study French last Sunday. ____________
A. His brother did so. B. So did his brother.
C. So his brother did. D. His brother so did.
Some plants are so difficult to grow that they can only ______ in a perfectly clean environment.
A. communicate B. exchange
C. survive D. afford
The family finally climbed to the top of the Mount Tai, ________.
A. exhausting B. amusing
C. exhausted D. fascinating
