－We could have asked Mr. Zhang for help. He is always ready to help others.
－I ________ that. A long time _______.
A．have forgot, wastes B．forgot, wasted
C．forgot, was wastedD．forgot, has been wasted
C
考查時(shí)態(tài)。句意：我們本可以向張先生尋求幫助的，他總是樂于助人。我忘記那事了，浪費(fèi)了很長(zhǎng)時(shí)間。根據(jù)語(yǔ)境，忘記和浪費(fèi)的動(dòng)作都發(fā)生在過(guò)去，所以都使用一般過(guò)去式，選C。
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