21. As we know, China ________ Japan with 10, 000 tons of gasoline and 10, 000 tons of diesel(²ñÓÍ£©in response to requests by the Japanese government.

A. offered                                         B. assisted

C. guaranteed                              D. conveyed

22. I think only you can stop yourself from achieving your _______.

A. view                                      B. ambition

C. thought                                         D. idea