______ has ridden on a railway train knows how _______ another train flashes by when it is traveling in the opposite direction．[ ]

_____anyproblemswhenyouarriveattheairport,givemearing．

I usually ride _____ bike to school. But this morning, I went to school by _____ bus.

Can you make a sentence to______ the meaning of thephrase

Some young people these days just ________ go out of their homes to contact the real world．