新prep2-232,不是run-on吗？

休止符

Although the restaurant company has recently added many new restaurants across the country and its sales have increased dramatically, its sales at restaurants open for more than a year have declined.原句是正确的
但有个疑问，一个句中是不能出现多套主谓的，prep破解也说了，像A do sth and B do sth是错误的，构成run-on,应该为A do sth;B do sth或  A do sth,and B do sth.
可是该题the restaurant company 和its sales 是两个不同主语啊，然后add和increase也是不同的谓语，为什么可以不用标点放在一起，这是run-on啊。。。
请假高手解析。。。谢谢！！！

mimily

同问此题。
为什么不是B。按逻辑，非划线部分说已经下降了，那么前面不该是increased吗？
不明白

mimily

请大家帮忙看看哦！

mimily

Although the restaurant company has recently added many new restaurants across the country and its sales have increased dramatically, its sales at restaurants open for more than a year have declined.
A. the restaurant company has recently added many new restaurants across the country and its sales have increased dramatically, its
B. the restaurant company has recently added many new restaurants across the country and its sales increased dramatically, its
C. many new restaurants have recently been opened across the country and its sales increased dramatically, the restaurant company's
D. having recently added many new restaurants across the country and with its sales increasing dramatically, the restaurant company's
E. recently adding many new restaurants across the country and having its sales increase dramatically, the restaurant company's

休止符

还是我自己来回答这个2个多月前发的吧。。。这道题专门我问了aeoluseros斑斑，这是他的分析：“run-on的原始概念只限定于一个分句里谓语动词数量太多，而并不包括A do sth. and B do sth.，后者被归入了run-on只是部分语法家的说法(GMAT在解释时借鉴了这种说法)，有部分语法家只把这后一类认为是因为意群之间没有逗号而比较awkward。事实上这两种解释都是可以的。

而这个句子里面，Although the restaurant company has recently added many new restaurants across the country and its sales have increased dramatically，这两个主谓宾结构都处于although这么一个大意群里面，所以连词前面不用加逗号。”

希望对大家有帮助