annoys me is that Kirn never returns the books she borrows on time.A. ThisB. ItC. WhatD.

问题补充：

annoys me is that Kirn never returns the books she borrows on time.

A. This

B. It

C. What

D. That

答案：

A. This

B. It

(答案→)C. What

D. That

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