16.   My supervisor is angry with me. I didn't do all the work I …….. last week.

• should have done
• B. may have done
• C. need to have done
• D. must have done

17.   She is very absent-minded: she ……… her cellphone three times!

• has lost
• B. loses
• C. was losing
• D. had lost

18.   He always ……… the crossword in the newspaper before breakfast.

• writes
• B. makes
• C. works
• D. does

19.   Not until the end of the 19th century ……… become a scientific discipline.

• plant breeding has
• B. did plant breeding
• C. plant breeding had
• D. has plant breeding

This factory produced ……… motorbikes in 2008 as in the year 2006

• twice as many
• B. as twice as many
• C. as twice many
• D. as many as twice

20.   In many big cities, people have to ……… up with noise, overcrowding and bad air.

• keep
• B. catch
• C. face
• D. put

21.   Had she worked harder last summer, she ……… .

• wouldn't have been sacked
• B. wouldn't have sacked
• C. wouldn't sack
• D. wouldn't be sacked

22.   Nobody’s got to stay late this evening, ……… ?

• is it
• B. have they
• C. isn’t it
• D. don’t they

23.   With hard work and study, you can …….. the goals you set for yourself.

• establish
• B. succeed
• C. achieve
• D. increase

24.   I accidentally …….. Mike when I was crossing a street downtown yesterday.

• kept an eye on
• B. caught sight of
• C. lost touch with
• D. paid attention to