20. They walked......................... 2 hours to reach the top of the mountain.
A. to  B. at     C. in          D. for

21. They will hold SEA GAMES 23................................... Philippines.
A. from  B. in     C. at          D. on

22.  The telephone was invented...................................... Alexander Bell.
A. with B. on   C. by         D. from

23.  He will be in Hongkong from Monday................................... Saturday.
A. in B. up to C. at         D. on

24.  They will be there................ 6:00 o'clock early................... the morning.
A. in/on     B. on/in      C. at/in............................... D. in/at

25.  He hasn't seen her........................ last year.
A. since             B. for               C. in                       D. at

26. If you like that book, I will give it..................... you as my present.
A.from     B. at     C. for         ....................................................................... D. to

27. Can you turn..................... the light? It's too dark.
A. on         B. in                              C. off        D. for

28. ....... the summer, I don’t go to school, so I get up late .............about 8 am.
A.  At / in B. In / at C. On /  at................................................................................. D. At / at

29. What are you looking.......................... ? My picture book. I've lost it.
A.on    B. for    C. off        D. in

30. She stays at home because she has to look............................. her baby.
A.      after     B. for    C. up .......................................................................................... D. at

31. Remember to turn................................... the light before going to bed.
A.of    B. on    C. off        D. up

32. Can you turn......................... the radio? I'm learning my lessons.
A.  of         B. in       C. off      D. on

33. If we go  …….littering, the environment will become seriously polluted.
A.     in          B. out  C. to   ............................................ D. on

34. My friends come to stay...................... us...................... Christmas.
A. with / in    B. to / in C. with /at     D. to / at

35 ........... the birthday …. Nam's mother, he made her a big cake.
A. At /of        B. To / of C. On / to     ........ D. On / of

36.Daddy, there is the weather forecast.......................... T.V.
A.  at         B. to                             C. in                                                                                 D. on

37.  Don't worry, everything is...................... control.
A.   on           B. without                     C. at           D. under

38.  Please hurry. We need these documents....................... delay.
A.under B. without         C. at           D. of

39.  We thought the two films were very similar.................. a great extent.
A.in       B. for    C. at           D. to

40.  Police officers don't have to wear uniform when they are.................... duty.
A. on           B. at      C. off                                                                                                         D. for

41. If we became rich, we would travel............................... the world.
A. on         B. in      C. around       D. at

42. I've looked ….my new pen everywhere and I can't find it anywhere.
A. at        B. for  C. up                  D. on