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Children these days ________ their parents too much. They should learn to look after themselves.
1年前
They will go to the store.(改为一般过去时)
1年前
Both of my sisters are teachers. One is a Chinese teacher, and ________ teaches English.
1年前
铁心插入通电螺线管,铁心被______,产生了______,于是通电螺线管周围既有______产生的磁场,又有______产生的磁场,使磁场大大增强.
1年前
1年前