单项选择题
A．How can I do that B．Are you going today C．Did you get it D．Do you have that E．Would you like my help F．Yes，I know G．NO，I don’t know H．Can I sell my used books
A.must B.can C.need D.have to
A. learners can’t afford it B. learners get too many hints C. it involves excessive writing D. it is not available at the weekend