The fire was finally brought under control,but not
__________heavy damage had been caused.
| A．before | B．after | C．since | D．as |
serious the economic situation is, they still have confidence in overcoming all the difficulties.
| A．Whatever | B．Although | C．Even though | D．However |
The teacher that his students had difficulty in English grammar, decided to give them more examples.
| A．knows | B．to know | C．knowing | D．being known |
Over the past decades, sea ice is decreasing in the Arctic global warming.
| A．as a result of | B．on top of | C．in front of | D．in need of |
Never in my dreams Zhao Benshan’s performance during the CCTV Spring Festival Gala was considered the best.
| A．I could imagine | B．could I imagine | C．I couldn’t imagine | D．couldn’t I imagine |
The woman rushed out she felt the house shaking.
| A．until | B．immediately | C．unless | D．before |