I have to finish my homework first cleaning up the room. A. because ofB. instead ofC. in f

I have to finish my homework first cleaning up the room.
A. because of
B. instead of
C. in front of
D. at the end of

A. because of(答案→)B. instead ofC. in front ofD. at the end of解析：句意：我必须先完成作业，而不是打扫教室。because of ：由于 ，instead of ：而不是，in front of：在---前面， at the end of：在---结束时结合语境可知应该选D。

对的，就是这个意思