托业考试

试题来源：托业-1
【单选题】 Get the invoice ______upon receipt.
A．(A) signature
B．(B) sign
C．(C) signed
D．(D) signing

参考答案：C
网考网解析：
Someone else will sign the invoice, so the past participle is used. Choice (A) is a noun referring to ... 查看试题解析出处>>