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8. He used
morning exercise in the park 5 years ago.
d. doing
do you often do?
d. things
a. does
b. to do
c. do
9. Do you often help your mother with the housework? What
b. objects
to leave medicine around the house.
b. dangerous
11. Traveling all over America, Bell demonstrated his invention at countless
c. chores
a. works
10. It is
a. safe
c. suitable
d. safely
a. matches
b. cities
c. exhibitions
d. information