Question

When the reached the top of the hill ,they _______________ so they had to stop for a rest.

A．held their breath

B．out of breath

C．lost their breath

D．breathed deeply

Answer 1

C

考查短语辨析。held one’s breath 屏住呼吸，out of breath 气喘吁吁的，lost their breath 喘不过气来，breathed deeply 深呼吸，句意：当他到达山顶的时候，他们喘不过气来，因此他们不得不停下来休息一会。所以选C。