Choose the best answer.
Trees won’t grow _____ there is enough water.
if
when
unless
as
If: nếu
When: khi
Unless: trừ khi
As: vì
If: nếu
When: khi
Unless: trừ khi
As: vì
=> Trees won’t grow unless there is enough water.
Tạm dịch: Cây sẽ không phát triển trừ khi có đủ nước.
Đáp án : C
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