1 couldn' t , for the life of_______(无论如何)， make head or tail (弄明白) of this jargon 行话）.
A. me
B. I
C. myself
No one believed that the accident had happened______.
A. of itself
B. on itself
C. in itself
D. for itself
This is not a bad suggestion______.
A. of its own
B. by itself
C. for its own
D. in itself
The students in our class had a heated argument_______.
A. of themselves
B. in themselves
C. among themselves
D. about themselves
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