____ caused the accident is still a complete mystery.
#4984
A
What
B
That
C
How
D
Where
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John Smith, a successful businessman, has a ______car. 
#4927
A
large German white
B
large white German
C
white large German
D
German large white
--- Do you really mean to prepare our lecture two months in advance? --- Sure. Anyway,  ___________
#4808
A
a good beginning is half done.
B
a bird in the hand is worth two in the bush.
C
a fall into a pit, a gain in your wit.
D
the early bird catches the worm.