Mark needs to learn Chinese _______ his company is opening a branch in Beijing. 
#67771
A
unless
B
until
C
although
D
since
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 He bought some books, ______ were expensive.
#71965
A
most of which
B
the most of which
C
most  
D
the most of that
"Why don’t you stay here over the weekend? " She said._______
#69819
A
She said why didn’t you stay there over the weekend.
B
She said why you don’t stay there over the weekend.
C
She asked me not to stay there over the weekend.
D
She suggested I should stay here over the weekend.
____ he was fired by the company is ____ he didn’t work hard.
#73134
A
What; because
B
Why; because
C
Why; that
D
That; because