Question

— How long have you known John? — Since he ______ to our class. A．has come B．came C．had

— How long have you known John? — Since he ______ to our class. A．has come B．came C．had come D．comes

Answer 1

B

试题分析：考查时态。根据第一句中的have known说明是从过去某个时间到现在，故since后面使用过去时。句意：—你认识John多久时间了。—自从他来到我们班级。故B正确。 点评：时态的考查要住关键词和上下文的语义。根据第一句中的have known说明是从过去某个时间到现在，故since后面使用过去时。