Đề kiểm tra: Practice test 5 có đáp án
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Poverty is a problem in many cities ________ whole families can only afford to live in one room.

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Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Poverty is a problem in many cities ________ whole families can only afford to live in one room.

when

where

even

if

Giải thích

Chọn đáp án B