Chatting on line is very popular ______ both the young and t

1.A
网上聊天在年轻人和老人中都很受欢迎.
A be popular with..." 在...中间流行"
B是想用词组:between ...and.." 在...和...之间",但这句话中已经有了词组:
both...and ...,也就是说and 只能和前面的both 连用,那between 后就没and 了.所以B不对(我想很多人这里会选B,就是因为他们只知有个between ...and ...的词组); C during "在...期间",后面一般加时间.D没这个用法.
2.pay for
请看下面两个句型:
人 spend 时间/钱 on sth.或是:人spend 时间/钱 (in) doing sth.
人 pay 钱 for 物

be popular with.是选A.
how much did you pay for the painting?

B between ...and
pay for 付钱