Her mother works at __________ hospital. She is a doctor.
--“Where is Tom?” --“He hasn’t come to school today, I think he ______be ill.”
Which of the following sentences doesn’t contain(包含) an object clause(宾语从句)?
My shoes are broken. They need ________.
---“Didn’t the robot have a rest?” ---“_______. Because it never gets tired.”
I bought a robot _______ have more free time.