Read the following passage and choose the correct answer for each gap

Ex3 : Read the following passage and choose the correct answer for each gap
Mark surfs the Internet every day , but he has never (1)...............more than an hour at a time online . Mark's got a laptop and also a smartphone , so he can (2)....................the Internet anywhere. Today , for instance , Mark has been (3)................three times.
He is not an Internet addict , but some of his friends (4)........................One friend of his always looks (5)..............because she spends all night online. Although she's got a lot of bad marks on the exams, she hasn't ( 6 )....................her habits.
1. A. spend               B. spending              C. spent             D. spends
2. A. have                 B. use                       C. play               D. get 
3. A. online               B. Internet                 C. computer            D. smartphones
4.A. is                       B. were                     C. are                    D. was
5. A. hard                 B. happily                  C. funny                D. tired 
6.A. change             B. changing               C. to change             D. changed