A： I must [B]pay a visit to [/B]my old professor some day to see how he is doing.
A： I must [B]pay a visit to [/B]my old professor some day to see how he is doing.
找一天我得去一趟老教授那里，看看他怎么样了。
A： I must [B]pay a visit to [/B]my old professor some day to see how he is doing.
找一天我得去一趟老教授那里，看看他怎么样了。