| A．moon | B．the moon | C．moons |
| A．star | B．stars | C．two stars |
| A．net | B．mouse | C．mice |
| A．she’d left | B．she’s left | C．She was left | D．she must leave |
| A．haven’t heard him |
| B．hadn’t heard him |
| C．haven’t heard from him |
| D．hadn’t heard from him |
| A．sold | B．selling | C．was selling | D．Selled |
| A．clean and sweeping | B．cleaning, sweep |
| C．are cleaning and sweeping | D．were cleaning and sweeping. |
搜索
