33．Tom ________ up early．But now he doesn't get up early．

A．used to get            B．is used get           C．was used to get       D．used getting

32．Have you studied ________ working ________ a group?

A．by，to                B．in，to                 C．by，with             D．in，with

31．She said she had some trouble ________ her homework．

A．finishing              B．to finish               C．finished                 D．finish

30．The population of India ________ than that of China．

A．is fewer               B．are smaller           C．is smaller               D．are fewer

29．--Would you like to play computer games with me?

--Sorry，I have ________ playing them．

A．made up              B．looked up            C．given up                D．picked up

28．________ the end，they arrived in the city ________ the cold morning of January 8th，2009．

A．In，at                 B．In，on                C．By，on               D．At，in

27．The students in our school should not ________ wear their own clothes．

A．allow to               B．be allowed           C．be allowed to          D．allow

26．The boys ________ to skate last year and they can skate very well now．

A．were taught           B．taught                  C．have taught            D．are taught

25．This Saturday，I will stay at home ________ going shopping．

A．instead for                  B．instead with           C．instead of               D．instead

24．You look different! Oh，you ________ a lot．

A．changed               B．changing              C．often changes         D．have changed