We     writing a letter of complaint to the manager himself．But we'd like to hear your opinion first．

A．have been thinking of

B．had thought of

C．were thinking of

D．thought of

下列选项中，哪些属于签证检查的内容（）。

A.姓名拼音、性别

B.签证种类、护照号

C.停留时间、入境次数

D.停留及入境有效期

E.使领馆印章和签证官签字