—I ___________ a science fiction from the library．
—Really ? How long ________ it _________
| A．was borrowed，has been kept | B．have borrowed，has been kept |
| C．borrowed，was kept | D．lent，has kept |
People _________ rivers for transportation since the beginning of history.
| A．used | B．have used | C．use | D．had used |
The new headmaster looks _________ to all the teachers and students of the school.
| A．friendly | B．seriously | C．probably | D．gently |
If the kids stay indoors all the time and get no exercise, they _________ weak.
| A．become | B．have become | C．will become | D．became |
At the meeting the boss was explaining his plan while his secretary_________ the notes.
| A．is taking | B．was taking | C．has taken | D．takes |
Mr. White spent about one hour and a half _________ the accident report yesterday evening.
| A．write | B．written | C．writing | D．to write |