----That’s a heavy box. Can I give you a hand?----______. I’m strong enough to carry it.
—Do you know whose dictionary it is?—It ________ be Ann’s. Look! Her name is on the first page.
—Why does John look so sad? —Lingling _________her ice cream on his new shoe.
—The boy is ________for his age. —Yes, I was much _______when I was his age.
—What’s this? —It’s a machine which was invented in __________century in China.
—Look, an old man is in the middle of the road. It’s too dangerous. —Let’s go and help him go __________the road.