---He, together with his parents _________ going to visit Shanghai in July．How about you?---I'm afraid I have to stay at home _________．A.are; on my ownB.is, by myselfC.is; by my ownD.are; on myself
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B解析就进原则与by oneself的用法。介词with后的谓语动词应和它前面的主语he一致，故A,D错。by oneself是“独自”的意思。故选择B。