Generous public funding of basic science would______a good many benefits for the country’s health，wealth and security.

The show opens next Monday. Between now and then we ______ it in the school hall every day.

Do you know her?-No. Her name rings a bell butI can’t remember ________ I heard it before.[ ]

As a student, I can’t afford ________ a new mobile phone.

You shouldn’t stay at home all the time. You’d better go out and relax now and then, ______