—You didn’t invite Mary to the ball?—___ her, too?
I shall always ____ your friendship greatly for friendship is more important than money.
The first textbooks written for teaching English as a foreign language ____ in the 16th century.
Readers can __quite well without knowing the exact meaning of each word.
You’d better choose someone______ you think ____ kind and friendly to help you.
Swimmers must be very strong in order to build up speed because of the high resistance of the water. Runners, ____, must struggle against the heavy resistance of the air and ground.