Jim was seen ______ in the library from 3p.m. to 5p.m yesterday.He is often noticed _____ the library.
About _______ of the books in our school library are written in Chinese.
We have so many kinds of guitars for you ________.
--“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 ________.