Put the sentences in each pair into one (Составьте из двух предложений одно).
Example: The snowflakes were slowly falling on the ground. Margo saw it. - Margo saw the snowflakes slowly falling on the ground.
The fish were happily swimming in the bowl. The children watched it.
The boy disappeared in the crowd. Nobody noticed it.
Something fell on the kitchen floor. James heard it.
The children watched the fish happily swimming in the bowl.
Nobody noticed the boy disappearing in the crowd.
James heard that something fell on the kitchen floor.
the children watched how fish happily swimming in the bowl.
nobody noticed the boy disappeared in the crowd.
james heard that something fell on the kitchen floor.