题目内容
—Has Jack finished his homework yet? I am waiting for him.
—I've no idea. But he _____ on it the whole afternoon.
—I've no idea. But he _____ on it the whole afternoon.
[ ]
A. is working
B. works
C. was working
D. worked
B. works
C. was working
D. worked
C
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---Has Jack finished painting the picture yet?
--- I’ve no idea. But he______ it the whole afternoon.
A.was painting | B.painted | C.had painted | D.have painted |