The ideapuzzled me so much that I stopped for a few seconds to try to _______

In some foreign countries, such as Canada, children usually leave their parents when they grow up. It makes the old feel_______.

intelligent people can often _____ thecomplex, a fool is more likely to complicate thesimple

the old man this afternoon If you , make sure you wear sunscreens to protect your skin.

Mrs. Black doesn’t believe her son is able to design a digital camera, ______? [ ]