In my opinion, mathematics _____fun, but more than 80% of the group _____agree with me.

John always thinks of others instead of himself.—So she does. It is __________ of him to offer help to others.

（天津市河东区201 4年高三二模考试）12. Jim wanted to keep fit, so he spent as much time as he_______ exercise.

Are _____ your parents—No , ______ aren’t.

How was the performance last night- It was so good. Though it ＿＿＿＿＿＿ nearly four hours, few people left early.