18. Min : _________ you met Mei Mei’s sister?
Julie : No, I haven’t.
A. Is
B. Are
C. Does
D. Have
19. Zack _________ many balloons for her sister just now.
A. blow
B. blew
C. blows
D. blowing
20. My sister ____________ her hair and dries it using a hairdryer every day.
A. wash
B. washes
C. washed
D. washing