状语从句练习一. 单项选择1. _ hes old, he can still carry this heavy bag. A. Though B. Since C. For D. So2. -Do you know if he _ to play basketball with us? -I think he will come if he _ free tomorrow. A. comes; is B. comes; will be C. will come; is D. will come; will be3. In the zoo if a child _ into the water and cant swim, the dolphins may come up _ him. A. will fall; to help B. falls; to help C. will fall; help D. falls; helping4. I don