—What do you think of the concert given by the famous Hong Kong singer?—Not so good.In fact, it _____ to be a great disappointment.
With a lot of difficult problems____________, the manager felt worried all the time.
--Was Tom there when you arrived? --Yes, but he___________ home soon afterwards.
—Look at these tracks. It __________ be a wolf. —It needn't be. It ___________ be a fox.
Travelers_______________ that they should bring their ID cards with them.
—Our holiday cost a lot of money. —Did it? Well, that doesn't matter____________ you enjoyed yourselves.