________ seems to be a strong competition in China for senior high students to enter college or university.
Many people have been ill from a strange disease these days, _____ we’ve never heard of before.
—He _____ to the meeting. Have you informed him of it? —Sorry. I _____ to.
It is not enough only_____the rules of grammar if you want to learn English well.
He _____the person referred to be put in prison.
_____you I owe a thousand apologies ____ having doubted your ability.