Question

4. We are listening to a talk how

English well.

   A. on learning   B. about;learn

   C. on;to learn   D. for;to learn

Answer 1

4. C

4. C 解析：a talk on/about 表示“一个关 于……的演讲”。

how为特殊疑问词，后接 动词不定式。