the number of students _____(be) growing every year
the number of students _____(be) growing every year
a number of foreigners _____(has) come to china for a visit
it took her five years ______(study) English
回答三个问题 .用所给单词适当形式填空
a number of foreigners _____(has) come to china for a visit
it took her five years ______(study) English
回答三个问题 .用所给单词适当形式填空
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