____ the flight to Beijing will be delayed is ____ I’m especially worried about.

下列加粗词的解释错误的一项是

ne can answer the question _______ wecan complete the task in time, do you know— Yes, and this is because we don’t knowthe way _______ the scientist used last time

His behavior was weall refused to receive him in our homes

It’s unwise to ______ you understand something when you don’t.