31. The Tower of London is _____ the Church tower.
| A．twice high than | B．two times as high as |
| C．twice higher as | D．three times the height of |
When ________ about his school life, Tim thought it colorful.
| A．asked | B．asking |
| C．to ask | D．asks |
Johnny wanted to ride his new bicycle in the street, but his mother told him ________.
| A．not to | B．not do it |
| C．not to do | D．do not |
In his speech, he said that it was his primary school teachers that he was fond of ________influenced his whole life.
| A．what | B．which |
| C．as | D．who |
Nothing that you say can change his mind, ________？
| A．do you | B．don't you |
| C．can it | D．can't it |
Come in and sit down and I ________ you what I've found recently.
| A．show | B．will show |
| C．showed | D．was showing |