This (6) injecting a microchip the size of a (7) of rice into the trunk of each tree. A. crumb B. speck C. bean D. grain

This (6) _____ injecting a microchip the size of a (7) _____ of rice into the trunk of each tree.
A. crumb
B. speck
C. bean
D. grain

Trả lời
Đáp án: D

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