The inventor（）his original design in order to increase the machine’s efficiency.
A. executed
B. modified
C. cultivated
D. decorated
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Who sponsored the conference on population（）
A. Cairo.
B. The United Nations.
C. The World Bank.
D. The World Health Organization.
Most animals are chosen for（）
A. their personality
B. their ability to be trained
C. their appearance
D. their friendliness
It was reported to have occurred（）
A. inside Manila’s port
B. in Singapore
C. near the Manila Bay
D. in Malaysia
NATO troops will join in（）
A. the Cold War
B. training exercises
C. Western armies
D. Eastern armies
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