Nobody would stand out admitting the fact，for some reason，________ they lost the game.

—— Don’t smoke today, honey, it’s three months since you smoked.—— OK, I ______.

Believe it or not, _____ did I hear it, but also saw it.

.I tried every means to reach my goal but failed. So sad ______ that I almost lost heart.

 Only when class began _______that he had left his book at home.