用 be going (to)结构填空。
I. The teachers ______ (have) a meeting in the afternoon.
2. He _______ (go hiking) next Saturday.
3. They ______ _ (watch) a basketball game tomorrow afternoon.
4. Mr. Zhang with his children ______ (go) for a walk this evening.
5. Both Wang Lin and her father ______ (sing) a song in the coming party.
6. How _____ you _____ (do) that?
7. There ______ (be) a school trip the day after tomorrow.
8. Where ______ the boys _____ (meet) at the school gate? .