.--- Only one of these books is worth . --- is no wonder that you look so upset.A. to rea

问题补充：

.

--- Only one of these books is worth .

--- is no wonder that you look so upset.

A. to read; That

B. of reading; This

C. being read; There

D. reading; It

答案：

A. to read; That

B. of reading; This

C. being read; There

(答案→)D. reading; It

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