Trapped by the police, the terrorists made their ______ attempt to explode the bomb that they carried.

The millions of calculations involved, had they been done by hand, _____ all practical value by the time they were finished

Why did Miss Yang look so worried when we saw her—Because she wondered __________.

What do you want to be in the future, John— I want to be ____ fashion designer. It is ___ amazing job.

How much shall I pay for the phone call? —-You ____ .This is free of charge.