题文
White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.
| A．when | B．while | C．though | D．since |
推荐试卷
White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.
| A．when | B．while | C．though | D．since |
试题篮
()
粤公网安备 44130202000953号
