问题
选择题
Even though they are not doubtful at all _______ John will pass the exam, I still wonder ______ he is fully prepared.
A．whether; that
B．that; whether
C．that; that
D．whether; whether
答案
答案：B
考查同位语从句。boubtful“怀疑的，有疑问的”，用于肯定句时，同位语从句用whether引导；用于否定句时，同位语从句用that引导；wonder“怀疑，想知道”，用whether引导宾语从句。故选B。