用所给单词的适当形式填空。 1. _____ (be) your mother in Beijing last week? 2. He often _____ (play) basketball after school when he was a studerit. 3. —What ______you_____ (do) last night? —I _____ (watch) TV with my parents. 4. —Why_____Iucy_____ (sleep) in the class this morning? —Because she went to bed very late last night. 5. I _____ (forget) to bring my MP3 with me today.