I hopes Lingling will recognize her from her photo when she ____ the airport.
There is a policeman _____ the bus. He is watching the traffic.
It’s good _____ old people to cross the road.
—Lily, here are your pens. Please _____ . —OK, Mom.
— _____ do you _____ English?—I like it very much.
—How many _____ are there in your class?—About 63.