问题描述：
You look different,you ____________ .
A．changed a lot\x05B．have changed a lot
C．changing a lot\x05\x05D．often changes
用什么时态?
A．changed a lot\x05B．have changed a lot
C．changing a lot\x05\x05D．often changes
用什么时态?
问题解答：
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