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Teaching little children is ______, but the teachers always _______.( )(本题2.0分)
A、 a hard work, to work hard
B、 hard work, to work hard
C、 a hard work, work hard
D、 hard work, work hard
A、 a hard work, to work hard
B、 hard work, to work hard
C、 a hard work, work hard
D、 hard work, work hard
参考答案