A variety of vehicles _____ in a steady stream along the main road.
A. canoed B. floated C. jogged 
flowed
—How about your negotiations?
—Pretty successful. Full exchanges of opinions allowed both sides of us to better understand ______ each stood on many issues.
| A．where | B．that | C．what | D．which |
The UN has warned that,_____ natural systems like forests and wetlands disappear , mankind is losing the services they provide such as protection from extreme weather.
| A．while | B．once | C．when | D．as |
That fellow’s attitude towards others is _______ annoy nearly everyone he meets.
| A．such as to | B．so as to | C．such as | D．as to |
With many major economic problems_______ to be addressed, there is no point _______ the growth rate of this year now.
| A．remaining ; predicting | B．remaining ; to predict |
| C．remained ; predicting | D．remained ; to predict |
There is only one who is capable of setting limits to your growth, and it _____ well be you.
| A．may | B．should | C．will | D．must |