7. __________ Mr. Williams addressed the audience, he showed a brief video about the engine he had designed.
A. then
B. so that
C. Before
D. Whereas
8. ________ restructuring several departments within the company. The majority of the problems with miscommunication have disappeared.
A. After
B. Until
C. Before
D. Like
9. Ken looked as if he _________ the news that he had a bad mark on the test.
A. didn’t know
B. doesn’t know
C hasn’t know
D. hadn’t know
10. The professor explained the new lessons for the students___________ exactly as he could.
A. for
B. as
C. too
D. if
11. ________ had she gotten her bag unpacked than she realized that her phone was missing.
A. No sooner
B. As long as
C. Hardly
D. Barely
12. I have lost touch with him ____________ he left for New York.
A. as soon as
B. before
C. after
D. Since
13. ____________________, I will give her the report.
A. When she will return
B. When she return
C. Until she will return
D. No sooner she returns
14. She had no sooner lit the barbecue _____________ it started to rain.
A. as
B. than
C. while
D. that
15. There are a number of problems in school; _________, many of the classrooms don’t have audiovisual equipment.
A. for example
B. however
C. Otherwise
D. thus