When do you think we will leave tomorrow? You had better __ ready at seven o’clock.

Find the answer _____ the question, please. [ ]

What time do you expect me back, Mum?— Say, _____ half an hour. [ ]

What do you think of this math problem?—It’s too easy. _____ in our class can work it out.

If I want to see them at the weekend, I just walk __________ to their houses.[ ]