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1eaving 1eaves 1eft are leaving
A; a The ; / The ; a A.; the
The number of; is The number of; are A.number of; is A.number of; are
A number of were taken to which saw
A. listen to listen listening listened
is were has been have been
None No one Not much No many
A.neither both either none
A.number of… reach The number of … come to The number of … reaches A.number of … comes to
The number，are increasing A number, has increased The number, has increased A number，are increasing
A., totally The, in total A., a total A, in all
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