Allofusknow,color-blindpeopleoftenfinditdifficultto__betweenblueandgreen.
_____enoughtimeandmoney,theresearcherswouldhavebeenabletodiscovermoreinthisfield.
Ihopemyfather____askmeaboutmymarks.
TheBentPyramidoutsideCairo__________ancientEgypt’sfirstattempttobuildasmooth-sidedpyramid.
_____,hecannowonlywatchitonTVathome.
