Choose the best answer.
If you don’t want to go out tonight, you _____ stay at home to watch TV.
might
should
may
can
Choose the best answer.
Trees won’t grow _____ there is enough water.
if
when
unless
as
Choose the best answer.
If he________exercises, he________play soccer.
doing/can
does/could
does/can
did/could
Choose the best answer to fill in the blank.
The Vietnamese authorities decided _______ files on “Don ca tai tu Nam bo” to UNESCO.
to submitting
to submit
submitting
submit