— Susan, would you like to go hiking with us this afternoon?— I'd love to, but I study for a test.A. may B. have to C. can
I __________ to Canada twice. It’s so beautiful.
Your classroom is so dirty. Everyone should keep it ______.
– What else do you want?-- ________ else. I think I have got everything ready.
My grandma didn’t go to sleep ______ I got back home.
--Would you mind watering the flowers for me?--______. I have to go to the post office.