1.                  _________ the most part, his explanations are quite easy to understand.

A. Toward                        B. Through                        C. With                             D. For                                 

2.                  The student is quick ________ understanding what the teacher explains.

A. with                    B. to               C. at                                D. about

3.                  Can you recommend me a good book .......... life in the sixteenth century?

A. about                           B. of                        C. in                                    D. from                                  

4.                  Students can memorize the works of Nam Cao by acting them ______ in class.

A. to                    B. out                           C. on                             D. off

5.                  It is hard______us to persuade him to believe what we said.

A. with                B. to                              C. for                            D. on

6.                  You should have gone ______ your essay before submitting it to the teacher.

A. up                      B. by                         C. on                        D. over