翻译：
Bymakingvehicleslighterinweightaluminumhasgreatlyreducedtheamountoffuelneededtomovethem,(PassageTwo)
Itisimperativethatstudents_____theirtermpapersontime.
Itwasrecommendedthatpassengers_____smokeduringtheflight.
AlthoughSPanish，heattendedthecourse.
Allofusknow,color-blindpeopleoftenfinditdifficultto__betweenblueandgreen.
