He passed away at by between( at, by, between ) the age of forty.
（他於四十歲時去世了。）
Eggs are sold by at about( by, at, about ) the dozen.（蛋以打為單位出售。）
We pay the worker by at with( by, at, with ) the day.（我們以日為單位付工人錢。）
They are sold at by to( at, by, to ) (the price of) 50 dollars a dozen.
The car runs at by for( at, by, for ) the rate of 20 miles an hour.
（這部汽車以每小時二十英哩的速度行駛。）
〔表方法、手段〕He gets his living by at beside( by, at, beside ) hard work.
（他藉苦幹謀生。）
The dog was killed by for between( by, for, between ) him with a stick.
（這隻狗被他用棍子打死了。）
What do you mean by at along( by, at, along ) this?
（這是什麼意思？）
He came by at with( by, at, with ) bus.
（他乘公共汽車來。）
What time is it by at( by, at ) your watch?
（你的錶幾點鐘？）
