題目：
Employees who believe they are eligible should let their managers know _______
they would like to apply for a pay raise.
A)that
B)how
C)if
D)who
答案為C,但我個人是選A
空格後是完整句 所以刪除D 另外B語意不通也刪除
而我想說if是「是否」的意思 放進去解釋好像很奇怪 所以選A
想請教一下各位這題是為何呢？
感激不盡