22. David        the test for further study in the USA. Let’s have a small party to congratulate him on his success.

A. has passed      B. has been passing                     C. is passing        D. had passed

23. Beijing took steps to limit the kinds of high-risk of borrowing money from the banks that can create the high price of housing,       happened in the United States.

A. what                       B. that                      C. how                   D. as

24. When and where we are going to hold the ball _____. So we’d better wait until we _____.

A. is not announced; are informed                         B. doesn’t announce; inform

C. are not announced; have been informed                     D. don’t announce; have informed