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3. A can opener is a combination of which simple machines?
a lever and a wedge
b. a wedge and a screw
a lever

By Elliana

3. A can opener is a combination of which simple machines?
a lever and a wedge
b. a wedge and a screw
a lever and an inclined plane
d. an inclined plane and a wedge​

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Elliana

4.
(A) Why waste time in idle pursuits?
(B) It is …​

Spot the error in the following sentence and re-write it:
Very few has developed habits that are environment friendly​

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