American police wasted hours of their time_____to catch a large hot air balloon they had believed to have a child inside.(A) tried(B) trying?
(C)to try(D)were trying
- 1 個月前
Answer is (B) trying. (participle construction with the verbs "waste" and "spend")
The pattern is:
verb + time/money expression + present participle
(wasted + hours of their time + trying)