If I ___ free tonight, I'll go to the cinema with you.
#103933
A
am
B
was
C
will be
D
be
推荐题目
Yangzhou high school ___________ since 1902. 
#100008
A
has come into existence
B
has been existed
C
has been in existence
D
began to exist
We      very early so we packed the night before.
#100576
A
leave
B
had left
C
were leaving
D
have left
Over the past l00 years,sea level      steadily as a result of global warming.
#103377
A
had increased
B
has been increasing
C
increased
D
is increasing