Question

【题目】She had to practice in various weather conditions before she passed the test.

A.flyB.to flyC.flyingD.to flying

Answer 1

【答案】C

【解析】

句意：她在考试通过之前必须在各种条件下练习飞行。

practice doing sth练习做某事，固定搭配，动名词作宾语；fly动词原形，to fly 不定式，flying动名词；故选C。