Listen! I think it____ be Mr. White singing in the office.
No, it ___ be him. He left for London just now.( )
must; mustn't
may; mustn't
must; can't
can; can
This is the most exciting match_______I have ever watched( )
who
which
that
Look, Sam is doing some_______in the library. ( )
to read
reading
read
It has started to rain. It's wise that we_______to the park.( )
didn't go
aren 't going
don't go
Please give me a call_______you come back. ( )
until
as soon as
while
Mr Brown has written some short stories, but he is______known for his plays.( )
much more
the most
better