Kate, do you know _______ it is from here to the gym? —About twenty-minutes’ walk. [ ]

I can’t imagine Phelps smoking marijuana (大麻).—______.

______ can you finish your homework, Ben?—In thirty minutes.[ ]

Is Jessica giving us a speech this evening?— No, it ________be her. She________ to Japan.

.—Tom plays computer games too much. — That’s why his mother is __________ his eyesight.