---What do you think of this maths problem? Is it too hard?----Not ___.
. Which of the following is wrong?This book is easy enough for ______.
. ______ was done by the girl students.
There are ten boxes on the desk and the ______ is yours.
What ______ heavy snow. Let's go out for a walk in ______ snow, shall we?
It is pleasant to play ______ game of ______ table tennis ______ summer afternoon.