—Why haven’t you asked her to come here?— She _____ an important experiment when I found her and she _____ it.
_____ puzzles me most is that I don’t know ______ the difference between the two lies.
Determination is a kind of basic quality and this is _____ it takes to do jobs well.
_________anyone should want to kill her was unbelievable.
-----Alice looks blue today.-----Yes, I asked her, but she wouldn’t say _____ troubled her.
_____ makes his parents proud is _____ his son has been admitted by Beijing University.