Mozart was a famous composer _____ with Beethoven, both of whom made great achievements in the field of music.

It is hoped that one day all the wild animals shut up in the cages will be set free to nature and live happily in wild.

John opened the door . There _____ he had never seen before.

Your effort is sure to pay __________ —Thank you for your encouragement

Give them a hand this time and I am sure they will offer theirs ______ in the future.