英語
高校生

原形不定詞はv o動詞の原形となりますが、この問題での原形不定詞が理解できません、わかる方教えてください

128 "I'm worried about Anna. She's really been depressed lately. ( ) in her room all day." "That sounds serious. ①All is she stay 3 All she does stay is 2 She does all is stay 4 All she does is stay 〈日本が

回答

疑問は解決しましたか?