—Tom wants to know if you ________ a picnic next Sunday.—Yes. But if it ________， we'll visit the museum instead.

—I feel bored with working all day. —Why not         some sports to relax yourself?

Teachers often tell us         in the river after school.

---Americans ____forks and knives to chopsticks while Chinese people ______use chopsticks.-----Different cultures makes it.

——What’s your mother?——She_________ a teacher, but now she is a doctor.