_____ deep down in the earth, the dead forests rotted away and became coal.
#97260
A
Buried  
B
Burying 
C
To bury  
D
Being buried
推荐题目
___________ your car unlocked outside means ___________ trouble. 
#93000
A
Leaving; to invite
B
Leaving; inviting
C
To leave; to invite
D
To leave; being inviting
___ made us disappointed. 
#97111
A
Her not coming back
B
Not her coming back
C
She didn’t come back
D
She not coming back
The old man needs a        ___________stick _________more steadily.
#97158
A
to walk, to walk
B
walking, walking
C
walking, to walk
D
to walk, walking