This year they have produced＿＿＿grain＿＿＿they did last year.
| A．as less； as | B．as few； as |
| C．less； than | D．fewer； than |
He telephoned to inform me of your birthday．____________，I would have known nothing about it．
| A．However | B．Otherwise | C．Therefore | D．Thus |
Actually，the London Olympic Park is built _____________ there used to be a poor area called East London．
| A．what | B．when | C．where | D．why |
I find that looking after children is a fun and challenging job ___________ you need to be patient and careful．
| A．That | B．which | C．where | D．when |
___________ we can have clean drinking water lies in ___________ effective measures will be taken by the government about water pollution.
| A．Whether；that | B．If；that |
| C．Whether；what | D．If；what |
There are many new central leaders in China now, ________ many once worked in the western provinces.
| A．in which | B．of whom | C．in whom | D．for whom |