Don’t forget _____ your history and math books tomorrow morning. — Thanks. I won’t.

It was only when I reread his poem recently ________ I began to appreciate their beauty.

ou know how Chinese acupuncture reduces pain— Well, well, _______. I’ve never read about that.

Three years ago，a society was set up to________the endangered animal and plant life from dying out in this area.

_____ the recent bad weather, the project is several weeks behind schedule