Question

complete the blanks in the following passage using the correct form of verb active or passive given in the bracket 1.In 1918 there a._____________(be) a serious out break of flu. the virus b._____________(known)as spanish flu and it c.__________(estimate) that is killed morr than 20 million people recent research which d._____________(conduct) into the structure of this virus e. ________(shed) important light on the killer diseases.

Answer 1

a. was
b. is known
c. is estimated
d. was conducted
e. will shed