A lot of trees________on the hill yesterday．
| A．are planted |
| B．will be planted |
| C．have been planted |
| D．were planted |
相关试题
Maria enjoys _____ music. And she can sing a lot of songs.
| A．listening | B．to listen to |
| C．to listening | D．listening to |
Last Sunday Maria and Jane _____ kites in the park.
| A．flew | B．flying |
| C．fly | D．flies |
Look! The students _____ the classroom.
| A．clean | B．are cleaning |
| C．are clean | D．cleaning |
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