Our school library contains over 50 thousand books.Đoạn văn38/40Our school library contains over 50 thousand books. There is over 50 thousand books in our school library.There are over 50 thousand books in our school library.There have been over 50 thousand books in our school library.There has been over 50 thousand books in our school library.Giải thíchChọn đáp án B