Journey to the West is a traditional book. It has been translated into different languages.( )
American
British
Chinese
As far as I know, the robot that can sweep the floor ________ in the 1980s.( )
is invented
invented
was invented
has invented
The man _______ be a doctor in this hospital, but I'm not sure.( )
must
would
can
might
Ling ling, you'll feel sleepy tomorrow _______ you go to bed early.
OK, Mom. I'll go to bed at once.( )
if
unless
though
because
Frank is an honest boy and he never tells a lie. We all _______ him.( )
miss
mind
doubt
trust
Mr.Liu _________ watches TV.He thinks watching TV is a waste of time.( )
often
seldom
always
usually