is _____ Liu Chang in our class, but I’m afraid he isn’t ____ one you want.

______ do you usually do at weekends, Susan — I usually help my parents do some housework.

下列词语中加点的字，注音没有错误的一项是（ ）

Who is the man over there Is it Mr Li—No, it ______ be him. Mr Li has gone to America.

Students should devote most of their time to studying rather than playing computer games —________No pains, no gains