Tìm lỗi sai và sửa lại

Tìm lỗi sai và sửa lại : 1. He (says) he (is) (accustomed to) (work) ten hours a day. 2. (The windows) of (that house) haven't (cleaned) (for) months. 3. You should (certainly) (to tell) them (to bring) their books (next time).