单项选择题

Selecting a mobile phone for personal use is not an easy task because technology ______so rapidly.

[A] is changing
[B] has changed
[C] changed
[D] will change

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单项选择题

Mike was always speaking highly of his role in the play, ______of course, made the others unhappy.

[A] who
[B] which
[C] that
[D] what

单项选择题

I knew the manager has been here for several days．because he came to see my father ______day．

[A] other
[B] another
[C] the other
[D] some

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