About _______ of the books in our school library are written in Chinese.
A．four-fifth B．four-fifths
C．fourth-fifths D．fourths-fifth
We have so many kinds of guitars for you ________.
A．to choose B．to choose from
C．to be chosen D．to be chosen from
--“Where is Tom?”
--“He hasn’t come to school today, I think he ______be ill.”
A．has to B．should C．may D．can
Which of the following sentences doesn’t contain(包含) an object clause（宾语从句）?
A．Many people believe robots will do most of our work.
B．Scientists should be able to develop plants that grow on Mars.
C．People think that humans on Mars have to wear special boots to make themselves heavier.
D．We all know the next Olympic Games will be held in Beijing.
My shoes are broken. They need ________.
A．repair B．to repair
C．repairing D．repaired
---“Didn’t the robot have a rest?”
---“_______. Because it never gets tired.”
A．No, it did B．Yes, it did
C．No, it didn’t D．Yes, it didn’t
