B.isgoing
togetherwith连接两个名词作主语时,谓动的形式与前一个名词相一致,即同Mrs.smith相一致,因此谓动用单数,选B.
不是的,要看具体情况而定.有的坚持就前原则,有的就近原则.如:Notonlyhebutalsoyouareright.(就近原则)Tomaswellastwoofhisclassmateswasinvitedtotheparty.(就前原则)当主语后面跟有with,togetherwith,alongwith,accompaniedby,like,inadditionto,aswellas,asmuchas,morethan,ratherthan,nolessthan,except,but,besides,including等连接的词组时,其谓语动词的形式全部与前一个名词相一致。如Therocksingeralongwithhisbodyguardwasrushedawayfromthetheater这位摇滚歌星被他的保镖保护着迅速地跑出了剧院。MrRobbinsaccompaniedbyhiswifeandchildrenisarrivingtonight罗伯逊先生在夫人和孩子的陪伴下今晚到达。Mylicenseratherthanmycreditcardswaslost是我的驾驶执照而不是我的信用卡丢了。Noonebutyourparentswastherethen除了你的父母当时那里没人。MrGreenbesideshisdaughterslikessports格林先生和他的女儿都喜欢体育。Tom,togetherwithMaryandAliceisgoingtoswimthisafternoon汤姆玛丽和艾丽丝今天下午将一起去游泳