单项选择题

At that time, this kind of cloth was hard to （） because the textile technology was not that advanced.

A．come up with
B．come through
C．come over
D．come by

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单项选择题

Scarcely （） when she started complaining to me of the terrible living conditions on the campus.

A．I arrived
B．I had arrived
C．did I arrived
D．had I arrived

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