Chuyên đề 5: Chủ đề

If we don’t save water,we will have to suffer fromn water shortage. A. Unless we don’t save water,we will have to suffer from water shortage. B. If we save water,we will have to suffer from w

48/50

If we don’t save water,we will have to suffer fromn water shortage.

Unless we don’t save water,we will have to suffer from water shortage.

If we save water,we will have to suffer from water shortage

Unless we don’t save water,we won’t have to suffer from water shortage

If we save water,we won’t have to suffer from water shortage.

Giải thích

Chọn A