In our school students are ________ according to how much they know and how old they are.
It is not __________ for me to borrow all the books from the librarynow because I can only borrow one each time.
It was not until I went through his paper that __________ what rapidprogress he had made in writing.
We did have a quarrel about money last night, but now we havealready __________.
When __________ whether Chinese could develop their own missiles, Qian Xuesen said Chinese could do anything that foreigners coulddo.
The girls burst out laughing when I began to make a speech, —__________,of course, made me feel embarrassed.