用所给单词的适当形式填空。 |
1. —How long ______ the students been ______ (watch) movies. —For three hours . 2. —When ______ you ______ (collect) coins? —Two days ago. 3. —______ you______ (finish) your work? —No, I haven't. 4. I'm interested in the boy's ______ (describe). 5. Do you know how ______ (take) pictures? |