In our class there are 50 students,half ___________ wear glasses.
My newly-purchased magazine is nowhere to be found. ______ I have left it on the train?
—Did your mother sleep well last night?—She ______ have slept through all those noises.
Don't use water to put out the fire if oil catches fire. As is known, oil ______ float on water.
—Lisa is going traveling at the cost of losing her job.—Really? She ______ a lot of money.
—Jenny took the 8:00 bus to Shanghai this morning.—Really? She ______ the 9:00 train. It's much more comfortable and safer to travel by train.