高等继续教育 / 统考英语B
正确率:统考%
题型描述: 单选题
Several screws(螺丝) need _ _ _ _ _ _ .
A. widening
B. enlarging
C. shortening
D. tightening
Several screws(螺丝) need _ _ _ _ _ _ .
A. widening
B. enlarging
C. shortening
D. tightening
参考答案: