单项选择题
So many comrades （） , the meeting had to be put off.
A. are absent B. were absent C. being absent D. be absent
单项选择题 （） could solve that problem. It's so easy.
单项选择题 If you want his address, you will have to （） the number in the book.
单项选择题 The conference was organized for all the （） in the city
