There is or there are

There ______ one apple 

There ______ presents 

 There _______ an exercise

There ______ a little room

There ______ little crocodiles

There ______ a big sheep

There _____ two cats in the garden

There ________ a big frog

  There ____ men

  There _____ children

 There _____ birds

 There _____ a wolf