用所给词的适当形式填空。 1. Please use the mouse and ______ (click) 'new document. ' 2. We don't use the Internet ______ (do) our homework. 3. ______ (one), he opens a new document. 4. ______ (final), the girl finishes her homework and goes home. 5. Can you help me ______ (switch) on the computer?