In the past 5 years a great deal of money _____ improving the environment of the school.
A．is spentB．has been spentC．was spentD．had been spent
B
考查時(shí)態(tài)。句意：在過(guò)去五年中大量的資金被投入改善學(xué)校的環(huán)境上。結(jié)合語(yǔ)境可知本句描述的是現(xiàn)在已經(jīng)完成的動(dòng)作，故用現(xiàn)在完成時(shí)態(tài)。選B。
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