He ____ in Beijing since he ____ to China
--- Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he?--- _________. He told me it's very interesting. He'd like to read it again.
“ ____________ you’ve made! But you should still work harder,” the teacher said to the boy.
It is careless him to make the same mistake again. I think it important him to be more careful next time.
--- Do you have __________ else to say for your mistakes? --- ________ but sorry.
About _______of the engineers in my company seem to be in their _________.