We don’t believe _____ little children can do ____ much work in such a short time.

Finally, people found computers ________.

He was wearing a pair of sunglasses and I didn’t _____him at first.

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

We had____8-day holiday,but some of us felt unhappy because of ____heavy traffic on the highways.