.Look out! Don’t get too close to the house ______ the roof is under repair.
| A．whose | B．which | C．of which | D．what |
This machine _______. It hasn’t worked for years.
| A．didn’t work | B．wasn’t working | C．doesn’t work | D．isn’t working |
I would rather _____ a little earlier to avoid ________in the rush hour traffic.
| A．to start; catching | B．start; being caught |
| C．start; to be caught | D．starting; being caught |
He speaks English well indeed, but of course not ______ a native speaker.
| A．as fluent as | B．more fluent than |
| C．so fluently as | D．much fluently than |
It was ____ that he had to ask for help．
| A．so big work | B．so big a work | C．such a big work | D．such a big job[ |
Pierre Curie stopped his research and _______ Marie in the search of an unknown material.
| A．attended | B．joined | C．took part in | D．joined in |