答案：D测试点：what引导的名词从句。分析：系动词后缺表语。what

答案：D测试点：what引导的名词从句。分析：系动词后缺表语。what引导的从句是名词性从句，可作表语，故选(D)。

Kết quả (Anh) 1:

Answer: d test points: what guided the noun clauses. Analysis: after the linking verb predicative deficiency. What before is a noun clause, but this book is, so choose (d).

Kết quả (Anh) 2:

Answer: D test point: what guided the noun clause. Analysis: After missing predicative copula. what is a noun clauses introduced clauses can be used for predicative was chosen (D).

Kết quả (Anh) 3:

The answer: D test point: what guided NOUN clause. Analysis: the verb after missing. The what clause is a noun clause, can predicate the (D).