Much time _____ sitting at a desk, office workers are generally troubled by health problems. ( 章节：1 难度：2)
- A、being spend
- B、having spent
- C、spent
- D、spending
正确答案:B
答案解析:有
微信扫一扫手机做题
做题室题库
做题室题库
Much time _____ sitting at a desk, office workers are generally troubled by health problems. ( 章节：1 难度：2)
微信扫一扫手机做题