“Why couldn’t they meet us at five o’clock?” “Because they were delayed by ________.”
| A．heavy traffic | B．heavy traffics |
| C．crowded traffic | D．crowded traffics |
推荐试卷
“Why couldn’t they meet us at five o’clock?” “Because they were delayed by ________.”
| A．heavy traffic | B．heavy traffics |
| C．crowded traffic | D．crowded traffics |
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