Most of the young girls know they should cut down on fat, but knowing such a thing isn’t of much help when it ______ shopping and eating.

Edison who invented light had _________ knowledge of science.

How old is Tom?—He is ____.

Mom, where’s my backpack?－You shouldn’t put your things casually, you should take good care of _____ own things.

I do all housework every day ______ my husband Bob just washes the dishes now and then.