The well-dressed man ____ to be a robber.

It’s wrong of a student to follow ______ his teacher says. — It’s true. I can’t agree ______.

Radium salts，which have been found to______ in bones，give rise to bone cancer.

The workers finished mending the road ____ this month.

－ ________ does the bridge made of steel weigh －About 90,000 tons.