Question

【题目】

Tina was hesitating about the job offer as she did not know ______ the company was an established one.

A. whether

B. what

C. until

D. although

Answer 1

【答案】A

【解析】句意：蒂娜对所提供的工作正在犹豫中，因为她不知道这家公司是不是一家地位稳固的公公司。此处whether引导宾语从句，作know的宾语，意为“是否”。