I go to see Peter yesterday evening

20. I go to see Peter yesterday evening, but he was not at home.

          A                          B                                    C       D

21.  You better  take the keys in case  I'm out .

           A               B                C         D

22. Your marks in English are low although you don’t study hard enough.

                             A                          B                 C                 D

23. We follow a custom to buy lanterns and moon cakes at Mid-Autumn Festival.

             A                    B              C                  D

24. Some people think young people should to follow the tradition of the society.

                                   A                            B                                      C       D