As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
| A．original | B．alternative | C．convenient | D．staple |
相关试题
. There are altogether eleven books on the shelf, _____ five are mine.
A. on which B. in which C. of which C. from which
Great changes have taken place in that school. It is no longer_____ it was 20 years ago,______ it was so poorly
equipped.
| A．what ; when | B．that; which | C．what; which | D．when, that |
I don’t like _____ you speak to her.
| A．the way | B．the way in that | C．the way which | D．the way of which |
Rather than _______everything to the last minute, I always prefer starting early.
| A．to leave | B．leave | C．leaving | D．left |
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