Respuesta :

You choose one of the words at the end. One of the word is singular... one of them is plural... for example: #1 is begins because series is plural.
Do you see the two words in the parentheses at the end of each sentence?
example - ( same, some ) <---- Those 
Well on each sentence pick the one that sounds right.
 On the first sentence the answer is begins.
Jot that down on the line. 
if you get stuck on one read it out loud to see if it fits right...
tell me if you understand... Hope this helps!