1. ai giúp mừn vơis ạ, hứa vote 5 sao ạ
   Choose from the four options given one best answer to complete each sentence by circling the corresponding letter A, B, C, or D. 
2. Tonny decides to using his computer more carefully ………attending some basic courses.before B. about C. for                           D. after           
3. A computer solution involves using a computer system ………..a problems.to solve solve                       C. solving                   D. solves
4. The background of the screen is called the desktop,………..contains labelled pictures called icons.
   A. when B. which                      C. where                      D. whom        
5. Computers are used to access the internet, ………basic research and to communicate with other students around the world
   a. do B. doing                      C. to do                       D. done
6. These two competing formats are …………to replace current DVD as the standard for watching movies at home.
   expect B. expects                   C. expected                 D. expecting  
7. This USB flash pen drive is the…….mobile drive for your computer
   a. late B. later                        C. lately                      D. lastest        
8. Many PCs have their BIOS stored on a flash memory chip …….it can be updated if necessary.
   a. and B. but                          C. so                            D. because
9. All the programs ……………a high level of consistency, with similar toolbars, menu bars, buttons and dialog boxes.
   a. have had B. has                         C. had had                   D. have
10. New disks need to be formatted before you can use them, unless they come performatted …………the manufacturer
    for B. from                       C. to                            D. of   
11. Some cameras can also ………….. to a printer or a TV set to make viewing images easier.be connected B. connected               C. connect                   D. connects