Yesterday I was about to leave for the market _____ my boss called and asked me to go back to the office at once．
| A．when | B．while | C．as | D．because |
推荐试卷
Yesterday I was about to leave for the market _____ my boss called and asked me to go back to the office at once．
| A．when | B．while | C．as | D．because |
试题篮
()
粤公网安备 44130202000953号
