The last time I Jack, he football with classmates.
A. had seen; was playing
B. saw; played
C. had seen; playing
D. saw; was playing
网友回答
A. had seen; was playing
B. saw; played
C. had seen; playing
(答案→)D. saw; was playing
解析：考查时态。句意：我上次看见杰克时，他正在和同学们踢足球。结合语境可知前文时间状语可知从句描述的是过去的动作，结合语境可知下文描述的是过去正在进行的动作。故选D。