问题描述:
we know _______doesn,t travel so fast as light.
A,sound B,sounds C,a sound D,the sound (理由)
2,all the ______are made of _______,not plastics.
A,glasses ,glass B,glass,glasses C,glasses,glasses D,glass,glass
A,sound B,sounds C,a sound D,the sound (理由)
2,all the ______are made of _______,not plastics.
A,glasses ,glass B,glass,glasses C,glasses,glasses D,glass,glass
问题解答:
我来补答展开全文阅读