Pls answer fast english sentence reordering

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

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

hello mate, can you add the lines 206-247?