— Why do you look sad?
— There are so many problems _____.
| A．remaining to settle | B．remained settling |
| C．remaining to be settled | D．remained to be settled |
At the same time，they are taking strong _______ to protect wildlife resources．
| A．actions | B．measures | C．step | D．efforts |
To enjoy the scenery，he would rather _____ long hours on the train ___ travel by air．
| A．spend ; to | B．to spend; rather than | C．spend ; than | D．spending; while |
His suggestion ____ the meeting be delayed was turned down.
| A．which | B．that | C．/ | D．it |
-— How far apart do they live?
---- _______ I know，they live in the same neighbourhood．
| A．As long as | B．As well as | C．As far as | D．As often as |
My interests include football, bowling and surfing the web ____ studying my favorite subjects.
| A．as well as | B．instead of | C．less than | D．rather than |