Life would be happier if we could only be born at the age of eighty and ________reach eighteen.
| A．entirely | B．gradually | C．finally | D．rapidly |
（2013·辽宁卷)Lauro was away in Paris for over a week.When she got home,there was a pile of mails for her
| A．waited | B．to wait | C．waiting | D．was waiting |
In some languages, 100 words make up half of all words _______in daily conversations.
| A．using | B．to use | C．having used | D．used |
_______ which university to attend, the girl asked her teacher for advice.
| A．Not knowing | B．Knowing not | C．Not known | D．Known not |
The airport _______ next year will help promote tourism in this area.
| A．being completed | B．to be completed |
| C．completed | D．having been completed |
The room is empty except for a bookshelf _____ in one corner.
| A．standing | B．to stand | C．stands | D．stood |