单项选择题

As a small boy, he was slow ______ learning to read and write.

A．on
B．with
C．about
D．in
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When ______ our sports meet is still a question.
A．shall we have
B．do we have
C．did we have
D．we shall have
单项选择题
The house ______ will be our new laboratory.
A．building
B．being built
C．to build
D．having built
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