He’s __________________ an e-mail.A. writing B. write C. written
根据答语,选择问句。(20分) ________(1)No, she isn't. ________(2)I learned how to use reference books in the library. ________(3)It's fine today. ________(4)He begins to study at seven in the evening. ________(5)I would like a glass of apple juice.
I really don't know________. A.what to do it B.where to do C.what to do
He's busy________ English. A.learn B.learning C.to learn
Why________read books? A.not to B.don't C.not
Teachers taught us________many ways. A.in B.at C.from