单项选择题
A.fell out B.fell through C.fell over D.fell behind
She can run 100 meters in 13 seconds without（）herself.A...
单项选择题She can run 100 meters in 13 seconds without（）herself.
A.executing B.inserting C.exerting D.devoting
We must（）these trash ideas.A.discardB.disposeC.discharg...
单项选择题We must（）these trash ideas.
A.discard B.dispose C.discharge D.dismiss
Most parents encourage their children to take an active...
单项选择题Most parents encourage their children to take an active part in social events,（）those events do not interfere with their studies.
A.lest B.though C.unless D.provided
