I could speak________ Japanese________ Chinese, so I had to talk with him in English.[ ]

A. either; or

B. neither; nor

C. both; and

D. not only; but also

有下列情形之一的合同无效：( )。

A．一方以欺诈胁迫的手段订立合同

B．恶意串通，损害国家、集体或第三人利益

C．以合法形式掩盖非法目的

D．违反法律、行政法规的任意性规定

E．损害社会公共利益