____Do you mind if I open the windows? _____ ______ I feel a bit cold.

However much _______, it will be worth it.

Excuse me, I get back my umbrella, madam? –I’m really sorry. I thought it was mine.

If you are careful enough, you will _________ make mistakes in your exams.

We have to get to the bus station ________ 6 o’clock,or we’ll be late.[ ]