一．单项填空（共15小题，每小题1分，满分15分）
( )1. There is ________ “m” and ________ “u” in the word “much”.
A. a; a B. an; an C. a; an D. an; a
( )2. Millie needs _______healthy.
A. to look B. keep C. to keep D. look
( )3. -- _ ______ do you exercise? --Three times a week.
A. When B. How often C. How long D. How much
( )4. There are three _______doctors and five ______nurses in the room.
A. man, woman B. men, women C. man ,women D. men ,woman
