_____alltherepresentativesstillnotthere,themeetingwaspostponedforseveralhours.
A、BecauseB
with 加名词短语,表示原因,本句意思为: “因为所有的代表还没有到场,会议 被推迟了好几个小时 ”。而 because(因为)引导的是原因状语从句,其后必须是个从句。 by 为“到⋯⋯ 为止 ” 。
I‘vebeentellingyou_____nottodothat,butyounevelistenedtome.That’swhyyougotintotrouble.
Ifhe_____thestorekeeper‘sscissors,hewouldhaveforgottentobuyapair.
Thereisn‘tmuchmilk_____isleftinthebottle.
Hewasvery_____togo,buthehadnochoice.
Copernicusmaintainedthattheearth_____roundthesun.