________ seems to be a strong competition in China for senior high students to enter college or university.
John is the only one of the students in the class who never _____ a mistake even when it is pointed out to him.
He said it would be at least three more months ________ he could recover and return to school.
_____ prevent her from going to the party, he pretended to be ill ______.
He said while ______ in the countryside, he ______ a lot of hardships and of course learned a lot.
Li Ming is a student who is easy ___ though he has some trouble ____ his lessons.