“I wonder why they’re late.” “They ______ the train.”a. can have missed b. could miss c. may have missed d. might miss
If we ___________some measures, we might have prevented the environmental pollution.
–May I smoke in the room? --No, you______________. It’s a non-smoking room..
---It’s a long time ______ I last saw you. ---Yes, and it will be another month ______ we can meet again.
John received an invitation to dinner, and with his work ________, he gladly accepted it.
-–She looks very happy. She ________have passed the exam. --I guess so. It’s not difficult after all.