问几个语法...有点晕...各位看看?!

tititalinUID: 2204754

觉得好久没做语法怎么突然状态不对了一样...
1.(Although) the new device was the most (cleve)r desighed bird feeder that Ms.Rodriguez had( ever owned), it could not keep squirrels (from) stealing the birdseed. (No error)
- a0 [& r* n0 ~2 [
the answer is "clever"????? what is that><!?!?

2.Growing up in a family where music was a daily part of life, Steve and Rick shared a determination (to become singing duos) known nationwide.
A.to become singing duos
B.to become a singing duo
+ h& b* h$ F  F7 r" F9 r, ?* Y5 DC.of becoming singing duos
D.that they would become singing duos
E.of becoming a singing duo

the answer is B?!?!? there`re two people here !!!???
8 T9 s8 S3 v$ J3 U7 w
" L9 K) t6 U: A还有那个preoccupation是不是只能接介词"with"?? 其他什么in 啊,on啊...都不行?!

8 z/ e8 Z9 e" ~$ e! k) Y* w2 M谢谢各位!!!

teresazhuUID: 195536

1.cleverly
! L1 R+ F6 k5 g& D! B  E2.singing duo不用复数

tititalinUID: 2204754

第一个完全是我晕了....
第二个为什么不用复数?!谢谢!!!!

zhangqian1201UID: 2184021

duo, 即两个人

zhangqian1201UID: 2184021

just like A team can be comprised of many people