26．—Can you make out who is the older one?—The twins were born so _______ that it’s difficult to tell them apart.

57I am sure you will excuse me _____ not telling you ahead of time

You are always full of energy (活力). Can you tell me the ____—Taking lots of exercise every day.

I think friends are like books—you don’t need a lot of them ____________ they’re good.

discuss the question raised last night, shall we — There is no hurry for thatI_____for a conference