帮忙解决几道语法题吧，谢啦

Q17:
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
A中如果and是连接两个句子，应该是用逗号隔开啊，D为什么不对？
纠正思路：长得像的放在一起比。A,B中显然A比B好，用的是完成时跟前面对应而不是过去时。看到C，觉得C比B差，因为主动优于被动。D,E？？？
Q4:
A new hair-growing drug is being sold for three times the price, per milligram, as the drug’s maker charges for another product with the same active ingredient原料，混合物的组成部分.

A. as
B. than
C. that
D. of what
E. at which
此题没有思路
Q2: In Creek theology the supreme being was Esaugetu Emissee (Master of Breath), who dwelt in an upper realm in which the sky was the floor, and who had the power to give and to take away the breath of life.

A. in which the sky was the floor, and who had the power to give and to take
B. where the sky was the floor, having the power to give and to take
whose floor
C. was the sky, and who has the power of giving and of taking
D. in which the sky was the floor, with the power of giving and taking
E. whose floor was the sky, having the power to give and take
E为什么不对？解释一下整个句子
C肯定不对，动词时态不对应；realm是指的地方，应该用可以表地点的关系副词，故C,E错；