My parents have promised to come to see ...

My parents have promised to come to see me before I ______ for Africa.

A．have left

B．leave

C．left

D．will leave

B 【解析】试题分析：句意,我父母已经答应在我去非洲之前来看我。before引导的时间状语从句，表示主句的动作发生在从句的动作之前。主句用现在完成时态，从句只能用一般现在时表示将来意义，故选B。考点：before引导的时间状语从句

考点分析：

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