66.

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

Speaking guides the sentence adverbial, which needs to be separated from the main body of the sentence with a comma, and H is correct.

Item F/J: Because the underlined part is not a complete sentence, F/J is wrong.

Item G: There are two sets of subject predicates before and after the underlined part, and there are no conjunctions, which is wrong.