Economy should be developed to raise people’s living standard.__________, effective measures should be taken to deal with different types of pollution caused by the economic development.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
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Out of the crowded bus______,who was dressed in a black suit and waved to a woman.
| A．a tall man in his thirties stepped | B．stepped a tall man in his thirties |
| C．did a tall man in his thirties step | D．did a tall man step in his thirties |
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By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t have to return.
| A．have cleaned | B．will be cleaning |
| C．will have cleaned | D．have been cleaning |
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________ their son away to college, the couple got more room in the house.
| A．As | B．For | C．With | D．Through |
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---How often do you visit your granny in the village?
---I feel ashamed. ______.
| A．Very often | B．By accident |
| C．Just once in a while | D．All of a sudden |
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Straight away I went to buy the tickets, but there were_______left for the next public holiday.
| A．nothing | B．none | C．neither | D．no one |