approach
A. vt. 接近
B. vt. 完成, 达到, 实现
C. 禁止
D. vt. 分析, 分解
abandon
A. vt. 吸收, 吸引
B. vt. 放弃,抛弃,放纵
C. vt. 指责,控告
D. vt. 使发生联系, 使联合
Watch your step,____you might fall into the water.
A. or
B. and
C. unless
D. but
_____ the days went on, the situation there got worse.
A. With
B. Since
C. Because
D. As