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         I felt it hard to keep up with my classmates. But whenever I want to ____________, my teacher always encourages me to work harder.

         A. go on                      B. give up                            C. run away                        D. give back

I felt it hard to keep up with my classmates. But whenever I want to ____________, my teacher always encourages me to work harder.

A．go on                            B．give up                   C．run away                D．give back

       I felt it hard to keep up with my classmates. But whenever I want to ____________, my teacher always encourages me to work harder.