Why does take Tom an hour to get home?— I don’t know. Maybe the traffic is heavy.

How long do you think ______ the Microsoft brings out a new product?

I usually do some cleaning ____ Sunday morning.[ ]

What’s that _____ the floor?—Oh, it’s mycat (猫).[ ]

What’s the weather like there?—It is terrible. It’s raining so _________ that we can ___________ go out.