[題目] 笛藤600 L8 p.51 Q13
Q13題目:
The _____ of answering each telephone call on the third ring
requires a dedicated receptionist.
(A)practices
(B)practical
(C)practiced
(D)practice
我選A 答案是B
請問為什麼是用單數呢?
還有
為什麼在.49的填空第8題卻是the practices的用法
想請各位解惑
謝謝
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