The visiting minister expressed his satisfaction with the talks, ________ that he had enjoyed his stay here.
正确答案： C
本题解析：
此处所填的词与其后的宾语从句构成状语，表示伴随情景。 add 是及物动词(有自己的宾语从句)，此处 adding表示主动意义，所表示的动作与谓语动作同时发生。
The house was quiet in the night, ________ the occasional coughing from my throat.
________ in thought, he almost ran into the car in front of him.
By the middle of the 21st century, the vast majority of the world ’s population will be living in cities _______ in the country.
The government called out policemen to suppress the riot.
The missing boys were last seen ________ near the river.
The policeman came up to the lonely house with the door _______, _______ there for a while and then entered it.
_______ he goes, she will go, and she never cares _______ happens.
______ the new plan can be carried out will be discussed at the meeting tomorrow.