1.I am tired.I( )for ten hours.
A.'ve been working
B.'ve worked
C.work

2.They're angry.They( )for ages.
A.are waiting
B.waited
C.'ve been waiting

3.How long( )?The park is flooded.
A.is it raining
B.has it been raining
C.was it raining
请各位老师指教！！

qin

have done 是已完成，have been doing 过去持续还可能继续，而单一个则现在过去将来。BBC

答案好像很不准确哦．第一题我更觉得选Ａ哦．前面强调我很累，应该现在动作还在持续.

ACB.考的都是现在完成时的进行时态.对将来有影响,并且有可能还将继续下去.

谢谢各位老师！以后如果我有问题的话，还会继续发到上面来的！请各位老师多多帮忙！

完全同意李老师．第一位老师的答案不敢苟同．