Question

( )I have no doubt in my mind ____they will be glad to see me. A.that B.how C.why D.whether

Answer 1

D 前半句是说我毫不怀疑……那就是肯定的，后半句是陈述句，讲脑子里的具体想法
ABC三个选项都用于问的意思
how是表方式，如果用这个，句子应该像 I'm wondering how they are going to find me
why 表示原因，如果用它，句子应该像 I don't know why they are so glad to see me
whether表选择疑问，“是否” 句子应该像 I'm wondering whether will will be glad to see me or nor

Answer 2

that

Answer 3

A that

Answer 4

D

Answer 5

D