The number of foreign students attending Chinese universities _________(rise) steadily since 1997.用所给词的正确形式填空.have been rising.为什么要用rising呢?

我的英语作文不好希望有老师能帮我批改一下我写的作文Fever of Bizarre Pets Recently,an increasing number of people involved in the Fever of Bizarre Pets. Many of them keep lizards,snakes and even tigers or lions in the foreig a number of the number of the number of,a small number of,a number of. the number of造句 the number of造句 the reciprocal of number the number of中文 the number of 是什么意思? the number of同义词 The number of students Number of the black the number of、a number of、large number的区别 翻译the system of number The total number of 中文 the number of的用法 a number of the students What’s the number of The number of errors( )surprising