初中英语时态专项练习题和答案初中英语时态专项练习100题和答案1.I will tell him as soon as he _____ backA. comeB. comesC. will comeD. came2. Mary _____ on shoes when she ____ them.A. tries…buys书博B. tries… buiesC. trys… buysD. trys…
ENGINEERING MATERIALS??工程材料【中英文对照】TYPES OF MATERIALSMaterials may be grouped in veral ways. Scientists often classify materials by their state: solid, liquid, or gas. They also parate them into or