________ deep down in the earth for thousands of years, the dead forest has rotted away and become coal．
| A．Having buried | B．Being buried |
| C．Buried | D．To be buried |
相关试题
．I will do what I can_________ the people in trouble .
| A．help | B．to help | C．help | D．helped |
The teacher told us that water_________at 100℃ .
| A．is boiled | B．boiled | C．was boiled | D．boils |
．It was three o’clock_________we finished the work .
A．wh ere |
B．by which | C．when | D．since |
—Which do you like , tea or coffee ?
—_____________.
| A．I like it very much | B．Yes , I like coffee |
| C．Tea , please | D．Thank you |
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