. At a rough estimate（估计）, Nigeria is ____ Great Britain.
| A．three times the size as | B．the size three times of |
| C．three times the size of | D．three times as the size of |
The saying “Old friends and old wine are best” means the things and people ____ we know are better than the unfamiliar.
| A．what | B．which | C．that | D．who |
_________ difficult and challenging the task may be, we must finish it on time, because there is a possibility _________we’ll be fired if we can’t fulfill the task on time．
| A．Whatever; that | B．However; that |
| C．Whatever; which | D．However; as |
Tom took out a piece of paper he and started reading in a clear tone.
| A．was preparing | B．would prepare | C．have prepared | D．had prepared |
For those who go to college, there are still hundreds of high-paying jobs that only require a high school diploma.
| A．can’t | B．mustn’t | C．shan’t | D．needn’t |
Hainan is a very large island and it’s the second island in China.
| A．large | B．larger | C．largest | D．most large |