Never before ______ so highly successful in his attempts to forecast the weather accurately on a small scale.
| A．man has been | B．man is |
| C．has man been | D．will be man |
We live in a society _______ there is a great deal of debate about competition.
| A．which | B．where | C．when | D．that |
With his mother_______ him, he is getting on well with his work.
| A．helping | B．to help | C．help | D．helped |
In the past half-century, average incomes _______ quickly in developed countries, yet happiness levels have remained almost the same.
| A．have risen | B．had risen | C．rose | D．rise |
Guangzhou was the second Chinese city_______ the right _______the Asian Games.
| A．obtaining; to host | B．to obtain; hosted |
| C．to obtain; to host | D．obtaining; hosting |
Joe, along with her three sisters, _______great interest in writing these days.
| A．was showing | B．were showing | C．is showing | D．are showing |