—Why are those people gathering in the middle of the street?
—I don’t know. There ________ be an accident.

You __________ tell anyone about this — it’s a secret.

--- Where is Jack? I can’t find him anywhere.
--- He ______ his homework upstairs.

Often he______ sit for hours doing nothing at all when he was in low spirits.

If you want to book tickets for the 2012 Olympic Games, just call 00952012．It ______ be simpler．

—How did you like the concert last night ?
—I enjoyed it very much, but the dancers _____ a better job．

My car is covered with thick snow and now the engine simply ______ start.

Though _______ money, his parents managed to send him abroad.

Some young people these days just ______ go out of their homes to contact the real world．

-----Who has made a mess in my room?
-----Who else         it but your naughty son?