My best friend Jack looks happy, and he always ________ a smile ________ his face.

Parents ________ much importance to education.They will do their best to give their children that priceless gift. [ ]

We are exited that a satellite ________ 10 tons was successfully placed in orbit yesterday.

there any tickets left ——Sorry, There are ______ if____

May I visit you at 10 o’clock tomorrow morning?— I’m afraid I ______ a document for my boss thenWhat about 12:00?