he thought he was helping us with the work he was actually in the wayA. SinceB. WhenC.

问题补充：

he thought he was helping us with the work, he was actually in the way．

A. Since

B. When

C. Because

D. If

答案：

A. Since

(答案→)B. When

C. Because

D. If

解析：考查连词辨析。A自从，既然；B当…时；尽管；C因为；D如果；句意：尽管他认为他是在帮助我们的工作，但是实际上他是在妨碍我们的工作。根据句意说明这里的when是指尽管，表示的是让步关系。故B正确。