-May I take your order?-Yes. I like the beef noodles, please.
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.
The sign means “ _____.”