– Do you know William failed the exam, Jenny? -- _____? As far as I know, he is always working hard.
John has determined to _______ teaching in the quake-hit area when he graduates from university.
------You’ve left the light on. ------Oh, so I have. _____________to turn it off.
--How did she get infected? --She ________the virus without any protection.
He always did well at school __________ having to do part-time jobs every now and then.
--thank you for keeping me _________ of everything that’s happening. --Don’t mention it.