His whole school education ________ only 2 years because of his illness.
A. added up
B. added up in
C. added up to
D. was added up
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No one _________of it.
A. dared to speaking
B. dared speak
C. can dared speak
D. dare speaking
This is the first time that I_________ at the meeting.
A. had spoken
B. have spoken
C. am
D. was
PLMN与固定网络的()称为Gi,固定网络的典型是分组数据网络