Mum, can I go to watch the movie Guardians of the Galaxy Vol. 2 tomorrow—Sure, if your homework .

_______ person who is responsible for hiswork will react quickly in _______ emergency.

The train ________ arrive at 1:30, but it was an hour late. [ ]

I knocked on the door but ______answered.

Why were you so late this morning? —I _____ in heavy traffic for an hour on the way here