- There must be a dozen pens in this house but I can never find one when I need

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- There must be a dozen pens in this house but I can never find one when I need one.
- Keep looking._____ is sure to turn up.

A．One

B．It

C．That

D．This

答案

解析

此处one泛指上文提到的某只“pen”。

举一反三

My most famous relative of all, __________ who really left his mark on America, was Rob Sussel, my great-grandfather.
One B. the one C. he D. someone

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I hear __________ boys in your school like playing football in their spare time, though others prefer basketball.

A．quite a lot

B．quite a few

C．quite a bit&n mso-bsp;

D．quite a little

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Of all the books on the desk, __________ is of any use for our study.

A．nothingILY:;

B．no one

C．neither

D．none

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Catherine bought a postcard of the place she was visiting, addressed __________ to __________ and then posted it at the nearby post office.

A．it; her

B．it; herselff

C．herself; her

D．herself; herself

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— There is still a copy of the book in the library. Will you go and borrow __________?— No, I’d rather buy __________ in the bookstore.

A．it; one

B．one; one

C．one; it

D．

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