计划工作的前提条件有些是可以控制的,有些是不可以控制的。()
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since the day I 5 my mobile phone.
A. paid
B. acquired
C. obtained
D. got
2 save your life!
A. must
B. can
C. need
D. have to
Mobile phones are also 3 because they have many good features
A. annoyed
B. interested
C. interesting.
D. annoying