You shouldn’t go out without a coat it’s rather cold .A. unlessB. even thoughC. howeverD

问题补充：

You shouldn’t go out without a coat , it’s rather cold .

A. unless

B. even though

C. however

D. since

答案：

A. unless

B. even though

C. however

(答案→)D. since

解析：since表示原因：因为，既然，一般表示众所周知的理由，句意“既然非常的冷，你不穿外套就不应该出去。故选D。