题干
I was watching the clock all through the meeting, as I had a train ______.
A：catching
B：caught
C：to catch
D：to be caught
答案(点此获取答案解析）
C
I was watching the clock all through the meeting, as I had a train ______.
A：catching
B：caught
C：to catch
D：to be caught
的值为（ 
）
