Question

カイ

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

Answer 1

ののののの

https://english-lab-japan.com/archives/12996