--- Do you know what Tom does all day ?---- I know he spends at least as much time watching TV as he ____________his lessons.
I rang you several times yesterday but couldn’t____.
----I think you look nice in the red dress. ----____.
____ caused the accident is still a complete mystery.
We made use of every minute ______ for the coming examination.
Mr Bush is on time for everything. How____ it be that he was late for the opening ceremony?.