.—How _______the frog(雾) is! We can’t see clearly while riding.

The students are too _____ to keep their eyes open in class because of staying up late.

 Anna is _____ to work out the math problems and gets a good grade. 

My father often brings me____, so I’m always happy when he comes back.

-___terrible weather it is! –It is says that it will get____ later.