急 求解英语单选

急 求解英语单选
46.We'd better have the bicycle ____ immediately so Sam can use it for the spring outing.
[A] repair
[B] to be repairing
[C] repaired
[D] been repaired
47.Excuse me,but it is time to have your temperature ____.
[A] taking
[B] to take
[C] take
[D] taken
48.It was in 1861 ____ the American Civil War broke out.
[A] that
[B] while
[C] during which
[D] in which
49.There is little doubt ____ you'll be able to judge truth and error if you have confidence in yourself.
[A] that
[B] whether
[C] as
[D] as to
50.It is a great surprise to me ____ Father changed his mind so soon.
[A] why
[B] that
[C] how
[D] because