This is __ song I’ve told you about . Isn’t it __ beautiful one?

The children get up ___ 6 o’clock. [ ]

I bet Mrs Black will come to help us with the celebaration if she _____ too busy tomorrow. [ ]

Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.

He _______ you an e-mail as soon as he ________ a plan.