—Where have you been? —I got caught in the traffic jam; I’m here just on time.A. howeverB

问题补充：

—Where have you been?

—I got caught in the traffic jam; I’m here just on time.

A. however

B. otherwise

C. though

D. anyhow

答案：

A. however

(答案→)B. otherwise

C. though

D. anyhow

解析：副词辨析。A然而；B否则，要不然；C尽管；D无论如何，不管怎样。句意：—你到哪里去了？—我遇见了交通堵塞。要不然我一定会准时到这里的。根据句意说明B正确。