At that time my wife took care of our children alone, and I seldom stayed at home _____being very busy with work.<br>A. up to<br>B. as to<br>C. due to

At that time my wife took care of our children alone, and I seldom stayed at home _____being very busy with work.
A. up to
B. as to
C. due to

出自：国开英语2

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