In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.
A.until | B.unless | C.although | D.if |
In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.
A.until | B.unless | C.although | D.if |
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