The infrastructure of a country is makes everything run smoothly，including things like transport， irrigation， electricity，postal service， telephones and schools

I believe __ you, so I believe __ what you said

Have you heard that George quit his job? —Yeah, but I can’t why he did so．

35. Don’t sit _____the corner of the desk.That’s impolite for a student.

uch salt did you put in the soup–I’m sorry to say, _________. I forgot.