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

解析試題分析：句意：你完成作業(yè)了嗎?還沒有。我正在做。由yet可知該句用現(xiàn)在完成時態(tài)，結(jié)合情景知后句用現(xiàn)在進行時態(tài)。所以選A。
考點：考查動詞時態(tài)。