They’re calling_____all men and boys over the age of 14 to join the army when th

游客2023-11-05  11

问题 They’re calling_____all men and boys over the age of 14 to join the army when the country is on the verge of war.

选项 A、on
B、up
C、for
D、back

答案 A

解析 动词词组辨析。call sb.on/upon意为“对……做短时间访问”,而call on sb.todo sth.表示“号召某人做某事”,如:They called on the workers of the nation to supportthe strike.他们号召全国工人支持这次罢工。
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