---It is high time that we _______ to school. ---If only the alarm clock _______! A. should go; rung B. shall go; had rung
Our monitor talks about Mars as if he ______ a scientist.
Your floor is dirty. It needs _______.
. ---Here you go. There are______ such cards here. --- I only need ______ these cards in the box.
---Listen! The fire engine is roaring! (消防车吼叫) --- Oh, there ______ be a fire somewhere. How terrible!
The robber can’t escape _______ this time. We have got much evidence to prove his crime.