---Hello, Mike. Long time no see. Where are you?

---Oh, not only my father but also I ________ Wuhan for a month.

A．have gone to

B．have been to

C．has been in

D．have been in

形成于对外力的适应性反应的是（）

A.无细胞无纤维牙骨质

B.无细胞外源性纤维牙骨质

C.有细胞固有纤维牙骨质

D.无细胞固有纤维牙骨质

E.有细胞混合性分层牙骨质