4.
B. As a result their legs could not support them on land
C. Water but a alternative could be fine
5
A. The stars twinkle in the night sky
B. Could the size of the universe reveal this
C. scientist say that the flecking of the stars indicates distance
6.
A. it has wings and a long forked tail and a sheen on the back
B.It has a blue band with dark red beneath its throat
C. swallows are often seen skimming a pond or an open space
