问题
There is no doubt ________ Tom is a good clever boy.
A:whether
B:if
C:when
D:that
B:if
C:when
D:that
正确答案是：
同类题型
24. NotuntilIcompletedtheform______thathalfquestionswerenotrelevanttome.
Where is Class________ ?It’s on the ______ floor.
My old neighbor Charles felt _______ after his children all moved out.
Your iPad is quite nice. Where did you buy ______? I want to buy ______, too.
Will there be more people in 100 years, do you think? , I hope.