Nowadays people are convinced ___ the negative effect of second-hand smoking ___ people around.
________ your letter, I would have set off two days ago.
You ________ in person; a telephone would have been enough.
I felt surprised that anyone of his intelligence ________ such an easy test.
________ from the bright smile on his face, he ________ in passing the job interview.
—Please don't tell anybody.—I ________. I promise.