Many people can’t learn lessons from the mistakes they’ve made_____they get hurt somehow.

He seems to be giving the impression that he didn’t enjoy himself in Paris________, he had a wonderfultime[ ]

Clover, why didn’t you attend the meeting yesterday? —I ____, but something unexpected happened

Are there any restaurants in Beijing _____authentic Mexican food

I would like a job which pays more, but ___ I enjoy the work I’m doing at the moment.[ ]