Allen had to call a taxi because the box was _______ to carry all the way home.

----I wonder why Mary is so unfriendly to us.----She is _____ than unfriendly, I’m afraid.

Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistakes becomes ______.

―Are you satisfied with what she has done?    ―Not a little. It can’t be ________.

After a thorough search, the rescue team finally brought the mountain climber back, ______.