Question

-- ________  your homework yet?
-- Not yet. I _______ it.

A．Have you done; am doing	B．Did you do; am doing
C．Have you done; did	D．Did you do; did

Answer 1

A

解析试题分析：句意：你完成作业了吗?还没有。我正在做。由yet可知该句用现在完成时态，结合情景知后句用现在进行时态。所以选A。
考点：考查动词时态。