关于beforeuntilsince等的疑问
Fewpeoplewillpayattentiontotheirhealth( )theygetdisease.
答案说是until我想问before能用吗?
Wewerechattingonthenet()thelightwentout.
.答案是when~我不知道能不能用until~还有这句翻一下~
Threeyearshadpassed()iknewit答案是before能不能用when...