that可否省略?

问题描述:

that可否省略?
How long do you consider ________ take to finish repairing it?
A it'll B that it'll
为什么A对B错,我认为consider后面加从句应该有that啊.

do you consider在这里是个插入语,在语法上可以忽略,后面的句子不是跟在consider后面的从句