The ... of UFOs is still in question (exist)

1/ word form;
a/ the .............................of UFOs is still in question [exist]
b/ for some people UFOs exist in films for ....................[entertain]
2/ verb form / verb tense
a/ we[not, visit] ....................you very often because you live so fas away
b/ rachel might [fail].....................her driving test , but she can [take ] ........................it agavin
c/ it may [rain] ..................this afternoon
3/ rerviting
a/ tessa wants a cup of coffee. [like]
-tessa.............................................
b/ let't go abroad for our holiday this year
-why .....................................................
c/ try harder and you will be successful
-if .....................................................
chan thanh cam on