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
I'm going to the supermarket this afternoon. Do you have anything______
A．to be buying
B．to buy
C．for buying
D．bought
单项选择题
-Are you coming to Kate's birthday party -I'm not sure．I ______go to the theater instead．
A．must
B．would
C．should
D．might
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