Why couldn ’t you ________ an answer when I asked you why you were late?
A、comeuponC
comeupwith意为“提出，拿出”，在句子中表示“你为什么拿不出你迟到的原因”。
Motivationandpersonalitymay________thevaryingdegreesofsuccessinone’scareer.
Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
Thehousewasquietinthenight,________theoccasionalcoughingfrommythroat.
________hehasmanyfriends,heisoftenfeelinglonely.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
