They ________ for twelve hours a day. A. eating B. eats C. eat
This time I don’t know if I _____ the exam. If I _____ the exam, I’ll have a great vacation.
I will get my good friend Amy _____ you when you are in the USA. A. to help B. help C. helping D. helped
— Kitty, do you know ______? — Sure, about forty minutes.
The teacher can _________believe that Tom studies so ________.
—When shall we go and play basketball? —Not until the work _____ tomorrow.