Choose the best option A, B, C, or D to complete each sentence.
 

Question 16. Although they spent a lot of money on the film, it wasn't a big __________.

A. success                      B. failure              C. performance    D. show

Question 17.  Solar energy ________ by many countries in the world in the future.

A. use                                      B. will use            C. will be using    D. will be used

Question 18. The concert was so boring. _____, Jack saw it from beginning to end.  A. Therefore              B. However          C. Although                   D. But

Question 19. I__________ go on foot when I was in primary school.

A. have to                      B. used to             C. can                   D. may

Question 20. Everybody attends the festival __________ fun.

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

Question 21. They___________ a test tomorrow; we don't want to disturb them.

A. will be having            B. will have          C. have                 D. had