She’s in hospital ____________.
A: under observation
B: in observation
C: at observation
D: on observation
A: under observation
B: in observation
C: at observation
D: on observation
举一反三
- She’s in hospital under ________ . A: observe B: observation
- be under medical observation 六字
- observation
- According to the author’s observation, college students—————————— .
- 被某人注意到 未知类型：{'label': 'questionDesc', 'content': '请为以下词组选择适合的英文表达。', 'isMemberControl': 0, 'type': 181} A: fall in love with B: keep…under close observation C: fall under one's observation