The young man insisted that he _____ nothing wrong and_____ free.

Scientists say it may be five or six years _____ it ispossible to test this medicine on human patients

Can I speak to Tom, please— Sorry, he is out. Can I take a ______ for him

_____, we need to imporve the equipment in our factory

Why didn’t you come to see the film withyour parents last weekend — I _____ my lessons for the month- exam