- 试题详情及答案解析
- My parents _______ have arrived at suppertime but their flight was held up due to the heavy fog.
| A．will | B．can | C．must | D．should |
- 答案：D
- 试题分析：考查情态动词。句意：爸爸妈妈本应该在晚饭时间到的，但他们的航班因大雾而延误了。情态动词+have done可以表示对过去事情进行推测，can/can’t have done(不)可能已经做了某事；must have done一定已经做了某事；should/shouldn’t have done本(不)应该做某事，故选D。
考点：考查情态动词