国家开放大学 / 综合英语(3)
正确率:100%
A variety of preventive measures are now _ _ _ _ _ _ in order to minimize the potential damage caused by the deadly disease.
A.by birth
B. at will
C.in place
D.on call
A.by birth
B. at will
C.in place
D.on call
参考答案:
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