---What’s this the wall?- It’s a photo my family.A. in, inB. on, ofC. in, ofD. on, on

---What’s this the wall? --- It’s a photo my family.
A. in, in
B. on, of
C. in, of
D. on, on

A. in, in(答案→)B. on, ofC. in, ofD. on, on解析：on the wall 在墙上，in the wall在墙里面，后面说是照片所以应用on the wall，a photo of my family 我家人的照片。of “……的”,in在……里面，on在……上面，故选B

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