I.单项选择（15）
1.The town will have _______trees and ______pollution.
A less ; more B more ; less C fewer ; fewer D less ; less
2 Mr Li asked Simon _______to close the windows when he left.
A don’t forget B to not forget C to forget not D not to forget
3．Can you tell me ________ at that time?
A. what were they doing B. what they were doing
C. what are they doing D. what they are doing
