Taking regular exercise and eating a balanced diet are two important keys ________ good health.
— I wonder if I could possibly use your car for tonight. — ______. I’m not using it anyhow.
Jane said to Mary, “What are you going to do tomorrow?”Jane asked Mary ___________.
21st Century School Edition is ____ a newspaper. It helps us to improve our English a lot.
— Would you like to ______ the discussion in our classroom?— I’d love to, but I’m ______ busy right now.
The ______ look on his face suggests that his ______ report failed the test.