-- Why do you suggest we buy a new machine? --- Because the old one has been damaged ___________.
—Hi, Tom! Could you spare me a minute? I want to have a word with you. —Sure, Jean ____.
--Peter, hurry up! You ______ on the phone. --Oh, I ______. Thank you.
It is a good plan in theory, but it _____ to be seen whether it works in practice.
What do you think of the reason _____ he gave at the meeting yesterday?
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.