Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
| A．while | B．as | C．if | D．since |
The most important _____ of his speech was that we should all work whole-heartedly for the people.
| A．element | B．spot | C．sense | D．point |
The climbers _____ their ambition by reaching the summit of the mountain.
| A．obtained | B．sustained | C．maintained | D．realized |
I remember her face but I cannot _____ where I met her.
| A．recall | B．remind | C．remember | D．remark |
He has left his book here on _____, so that you can read it.
| A．purpose | B．intention | C．aim | D．meaning |
He has left his book here on _____, so that you can read it.
汇
| A．purpose | B．intention | C．aim | D．meaning |