--- Look，someone has left the fridge door open again．
--- Well．It __________ me，Morn．
| A．isn’t | B．won’t | C．hasn’t been | D．wasn’t |
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 |
Many scientists believe that global warming, if , will cause extreme climate changes this century.
| A．not stopping | B．no stop | C．not stopped | D．without stop |