我一直在询问环球机票的价格。

I've been making ___inquiries about the cost of a round-the-world ticket.

亲爱的苏，我很抱歉这么久没回你的信，但我没忘记询问关于水上运动中心工作的一些事情。

Dear Sue, I apologize for not responding to your letter for so long, but I didn't forget to make some ___inquiries relating to the job in the Water Sports Centre.

她向客户服务部门发送了一个询问。

She sent an ___inquiry to the customer service department.