I have no idea who stole his wallet. It _____anyone.A. must have beenB. should have been

Tom _______ have kept his promise. I wonder why he changed his idea.A、needB、shouldC、must

You have no idea how worried I was.（英译中)

Which of the following italicized parts is a predicative clause（表语从句)？A．I have no idea

The speaker seems to have no______ideas; his speech was full of platitudes.A．trueB．origina

I have no idea______we met for the first time.A．thatB．whetherC．whatD．when

I have no idea（)to make my speech interesting.A. howB. whyC. when