________________（谈到物理学), I know nothing.

– Look at the mess you’ve made! －－ _________________A、I’m sorry.B、I don’t know.C、I like

Its not______I enjoy; I do it purely out of a sense of duty.A．anythingB．somethingC．nothing

Each of the mechanical devices ______ its task as though nothing ______ wrong.A．perform, i

I knew nothing about his journey______he was like

-- I really don know how to thank you enough.--______.A.No problemB.Think nothing of itC

Sir do you have anything______ this afternoon? If there is nothing to do I wonder if I c