An invention is a new way of solving a problem, so try our best to think of many __________ and unusual ways.
A.varying |
B.variety |
C.varied |
D.variation |
推荐套卷
An invention is a new way of solving a problem, so try our best to think of many __________ and unusual ways.
A.varying |
B.variety |
C.varied |
D.variation |