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题目内容
(信阳师范学院中学英语教学论)
( ) The keeper is supposed______ the chickens by now.(本题1.0分)
A、 to be feeding
B、 feeding
C、 to have fed
D、 to feed
A、 to be feeding
B、 feeding
C、 to have fed
D、 to feed
参考答案