选用cross、across或through填空 He was afraid that he world forgot it,so he marked it with a ______.Water goes ______these pipes all the time.She climbed in ________the open window.
He was afraid that he world forgot it,so he marked it with a ______.Water goes ______these pipes all the time.She climbed in ________the open window.(1)他担心 / 害怕 他会把这个事忘记了,因此他用一个...