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q1) this is a bar or a rod, one end of which is placed under a heavy object so that when you press down
on the other end you can move the object.
-밑줄친부분이 결과로쓰였는데요, so that은 목적으로도 쓰이는데요 어떻게 구별하는지요?(문맥에 따라해야하
지는요?)
q2) during the 1800s, the streets within cities became extremely crowded with people and traffic.
-동사가 밑줄친 부분중에 어느것인지요?(became crowded가 수동태로 쓰인것인지요?)