Supply with the correct grammatical signal. Write the letter only.
A. as a result of
B. brought by
C. is caused by
D. results from
E. result to
16. Sunburn ________over exposure to the sun’s rays.
17.Time management______efficiency and productivity.
18.Sometimes an effect becomes a cause of another effect which ______ a chain reaction of some sort.
19.Motivation ________productivity.
20.Local production ________drastic reduction in prices of commodities.