we wish / trustworthy / to know / they are / and reliable / in doing business / if
【正确答案】：We wish to know if they are trustworthy and reliable in doing business.
【题目解析】：本句句意为我们想知道他们做生意是否值得信赖。wish to do sth.意为“想要干某事”；if引导宾语从句，宾语从句要用陈述语序，be trustworthy and reliable in sth.在......方面值得信赖。