What the doctors really doubt is _____my mother will recover from the serious disease soon.
How proud she is! She has been ________ Beijing University.
I used to quarrel a lot with my parents, but now we ________ well.
---- She looks happy. She ________ have passed the exam.---- I guess so. It’s not difficult after all.
Scientists have to work hard to keep ________ with modern discoveries and developments.
The child was told to ________ for being rude to his uncle.