I met Lucy in the primary school and we have been close friends .A. as usualB. again and a

问题补充：

I met Lucy in the primary school and we have been close friends .

A. as usual

B. again and again

C. sooner or later

D. ever since

答案：

A. as usual

B. again and again

C. sooner or later

(答案→)D. ever since

解析：A项像往常一样；B项再三的，反复地；C项迟早，早晚有一天；D项从……以后，从……起。句意“我和露西相识在小学，从此以后我们成了亲密的朋友。”答案D符合题意。