单选题 President, as well as volunteer workers, ______ the newly-built stadium．
A．is cleaning B．are cleaning
C．were cleaning D．have cleaned

【正确答案】 A

【答案解析】当主语后面跟有with，together with，along with，like，except，but，no less than，as well as，including，rather than，besides，more than，accompanied by，in addition to等词引起的短语时，谓语动词与前面的主语一致。