单项选择the students talked about the task for hours,and()they f

the students talked about the task for hours,and(D)they finished it
Anext Bfinaly Clate Dfirst
what (C)you sing if she plays the piano for you
Awould like Bdia Cdo Dwill
the zoo is wonderful .in it (B)many kinds of animals
Ais Bwas Care Dwere

1、B，译文：学生们讨论了几个小时这个任务，最终完成了它。
A表示然后，下一步，但是表示下一步时后面需要有逗号而且一般不与and连用
C表示晚和落后，语义不符
D表示首先，第一步，语义不符
2、D，译文：如果她给你弹琴伴奏，你会唱些什么
A的用法为 would you like
B拼写错误
C表示已经唱了些什么，但是本句应该表示一种假设

第一个选B。学生们讨论问题很久了，最终他们定了下来
第二个选D。主将从现。
第三个选C。主语是“kinds”句子还原为“many kinds of animals are in it”
楼上的别误导人

the students talked about the task for hours,and(D)they finished it
Anext Bfinaly Clate Dfirst
what (C)you sing if she plays the piano for you
Awould like Bdia Cdo Dwill
the zoo is wonderful .in it (B)many kinds of animals
Ais Bwas Care Dwere