A、function
B、balance
C、digest
D、cycle
第1题:
A、do
B、didn't
C、did
D、don't
第2题:
Must I stay at the office this afternoon? ---No, you ______.
A、don’t
B、needn’t
C、don’t need
D、can’t
第3题:
A、do
B、don't
C、will
D、won't
第4题:
I put my coat here? Sorry, you()
AMay; mustn't
BDo; don't
Ccan; needn't
DMay; can't
第5题:
A. can
B. could
C. might
D. should
第6题:
-Mayweleavetheclassroomnow?
-No,you______.You______toleaveuntilthebellrings.
A.mustn’t,areallowed
B.don’thaveto,aresupposed
C.needn’t,aren’tallowed
D.can’t,aren’tsupposed
第7题:
You_________tell anyone一it's a secret!
A. have to
B. don't have to
C. must
D. mustn't
第8题:
A.do
B.did
C.don’t
D.didn’t
第9题:
You_____tell anyone -it's a secret!
A. have to
B. don't have to
C. must
D. mustn't
第10题:
4、输出如下程序结果,并简要说明程序运行原理: import Netimport random name='小明' time=0 print(name,'上网时间、行为统计:') time += Net.net_play(1.5) time += Net.Watch_videos(2) time += Net.Play_game(3) time += Net.Study(2) Net.times(time)