----- How did you do in the test ?----- Not so well. I ______ much better but I misread the directions for Part D.A. could have done B. could do C. must have done D. should do
What a table! I’ve never seen such a thing before. It is____long.
So far we have done a lot to build a low-carbon economy, but it is _______ ideal. We have to work still harder.
---I heard Tom was badly injured in the football match. ----________, let’s go and see him.
Scientists have found it seems _______animals and humans are much alike than we thought.
Parents should see to it _______ their children form the habit of brushing their teeth every day.