国开大学商务英语1-6答案(16)

题目44：is very important that you don’t make a ny mistakes when you calculate those figures.

: That

; What

; It

标准答案：It

题目45：—Hello, Sally. What’s the matter with you You look worried.

—

: Don’t mention it.

; Yeah, that’s true. It requires great attention.

; What shall I do if a customer doesn’t pay up on the due date

标准答案：What shall I do if a customer doesn’t pay up on the due date

题目46：He didn’t seem to any actions.

: do

; take

; make

标准答案：take

题目47：your check is received within a week we shall have no alternative. : As

; Unless

; If

标准答案：Unless

题目48：— The senior managers need the results from last month straight away, so I can’t stop to talk. I’ve got to hurry.