三. 单选：
（    ）1. The boy is waiting for a bus       the bus stop .
A. in      B. on     C. at      D. of
（    ）2. Tell me       to get to the Water Park .
A. where     B. what     C. how     D. when
（    ）3. The students are busy       trees and flowers .
A. to plant      B. plant     C. plants    D. planting
（    ）4. He       on his coat and       out .
A. put , go     B. put , went     C. puts , go      D. put , going
（    ）5. I’m sorry to keep you       for a long time .
A. to wait      B. waiting     C. wait     D. waited
（    ）6. Stop       , please . Let’s go on with our lesson .
A. talk      B. to talk     C. talking     D. talked
（    ）7. She       up late this morning .
A. got      B. get     C. gets     D. is getting
（    ）8. I didn’t watch TV until I finished       my homework .
A. to do      B. did      C. do      D. doing
（    ）9. The children       the park tomorrow .
A. went      B. are going to       C. go       D. goes