单项选择题

Peter had no idea how long will he spend there he got the order,

A．while
B．until
C．after
D．when
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单项选择题
I was angry when I knew my favorite apple tree ______.
A．cutting down
B．cutted down
C．being cut down
D．to be cut down
单项选择题
Excuse me, do you know when ______ your boss
A．can I see
B．do I see
C．I see
D．will see
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