_______ exercising, ________ you'll be healthier.
| A．Keeping, or | B．To keep, and |
| C．Keep, and | D．Kept, or |
Everyone should do something wild animals.
| A．protect | B．protecting |
| C．to protect | D．to protecting |
The trip from the school ________ about two hours by bus．It was too _________.
| A．spent, boring | B．cost, bored |
| C．took, boring | D．took, bored |
I don’t know if he _______ tomorrow．If he _________, please let me know.
| A．will come; comes | B．will come; will come |
| C．comes; comes | D．comes; will come |
— I’d like to buy Guo Jingming’s Tiny Times.
— You had better __________his books．The stories he tells are far from real life.
| A．don’t read | B．not read |
| C．not reading | D．not to read |