There is no doubt ________ people ought to struggle against pollution.
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The facts have proved ________.
The chair, one of ________ legs is broken, needs repairing.
The man came up to a lonely cottage, ________ there a while, and then entered it with great interest.
They usually have less money at the end of the month than ________ at the beginning.
----How long has this bookshop been on business?
---- ________1982.
The boy wanted to ride his bicycle in the street, but his mother told him ________.
----Alice, why didn't you come yesterday?
----I________, but I had an unexpected visitor.
----Nancy s not coming tonght.
----But she ________.
Dr. Black comes from either Oxford or Cambridge, I can't remember ________.