用所给词的正确形式填空。 1. You should be much ( health). It's good for your health. 2. Recently I listened a song _ (call) Heart Strings . 3. He told me that he (teach)in that school for 10 years. 4. I've been (try) to cheer him up for 20 minutes. 5. The telephone _ (invent) before the car.
