—You used to play football, _______?
| A．do you | B．don’t you | C．didn’t you | D．did you |
—How many women doctors are there in your hospital?
—______ them ______ over twenty.
A．A number of; are
B．The number of; are
C．The number of; is
—It’s Father’s Day today, ______?
—Yes, let’s buy a gift for Dad.
A．isn’t he B．doesn’t it C．isn’t it
—Claudia, are you going to Mike’s birthday party on Sunday?
—Unless I ______ .
A．am invited B．invited C．was inviting
We are too tired. Let’s stop ______ a rest.
A. to have B．have C．having
Li Na is one of ______ tennis players in the world.
A．most famous
B．the most famous
C．more famous