问题

When I went in , they were ____ in a heated discussion .
A:absorb
B:absorbed
C:absorbing
D:being absorbed
B:absorbed
C:absorbing
D:being absorbed
正确答案是:
同类题型
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“Goodbye, then,”she said, without even ________ from her book.
Who has taken my pen away?—__________. He was here a moment ago.