【题目】Helen is having a good time her grandparents in the countryside.A.visitB.to visitC.visitingD.visits
【答案】C【解析】have a good time doing sth 是固定搭配,意为“做某事很愉快”,故选C。句意是:海伦正在乡下看望她的爷爷奶奶,玩得很开心。