21．Harry has been out of work for six months，so he has difficulty________.
A．earning livings B．earning his living
C．to earn livings D．to earn his living
22．Anyone __________ this opinion may speak out.
A. that againsts B. that against
C. who is against D. who are against
23．Playing computer games is very _______ in my spare time.
A. interested B. enjoying C. enjoyable D. happy
24．If you go and study in Britain, you can get up an hour later ______ as schools in China begins before 8 a.m.
A. as usual B. as usually C. than usual D. than usually
25. The wolves hid themselves in the places __________ couldn’t be found.
A. that B. where C. in which D. in that
