In the past, people had knowledge about the illness.
A. little B. few C. many
My mother _______ goes to work by car because she cannot drive a car
| A．often | B．usually |
| C．never | D．sometimes |
Simon doesn't know what _______ today.
| A．wears | B．to wear |
| C．wearing | D．to wearing |
There are three _______doctors and five ______nurses in the room.
| A．man, woman | B．men, women |
| C．man ,women | D．men ,woman |
-- ______ do you exercise? --Three times a week.
| A．When | B．How often |
| C．How long | D．How much |
Millie needs _______healthy.
| A．to look | B．keep |
| C．to keep | D．look |