A huge amount of oil was spilt on the East Sea, the causes of ______ are still under investigation.
| A．it | B．that | C．which | D．whom |
Jane nearly missed the flight ____ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
Your body language _____ your real emotion.
| A．gave in | B．gave up | C．gave away | D．gave out |
_____, Mother will wait for him to have dinner together.
| A．However late is he | B．However he is late |
| C．However is he late | D．However late he is |
The Roman Empire _____ for several centuries.
| A．exists | B．existed | C．was existed | D．is existing |
I could hardly tell the twins apart because their appearances are only ____ different.
| A．slightly | B．gradually | C．personally | D．extremely |