ADMICRO

Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.

Researchers are developing low-cost devices. These devices can detect water pollutants in rivers and lakes.

Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án

ZUNIA12
ZUNIA9
AANETWORK