Question

【题目】Though he was very tired, _______ he had to keep _______ for another two hours.
A./; driving
B.but; to drive
C./; to drive
D.but; driving

Answer 1

【答案】A
【解析】句意：虽然他很累，他不得不再开两个小时的车。though引导让步状语从句，不可用but；keep doing sth一直做某事。故选A。