Choose the letter of the best answer.

15.which of the following endings may be added to a regular present tense -er verb?
a) -is
b) -es
c) -it
d) -s

15.which of the following endings may be added to a regular present tense -ir verb?
a) -issez
b) -ez
c) -e
d) -s

17.which of the following endings may be added to a regular present tense -re verb?
a) -issent
b) -e
c) -s
d) none of the above

18.which of the following is not a future tense ending?
a) -ons
b) -ez
c) -ent
d) -ont

15 = es (manger = tu manges)

16 = issez  (depends which vers on -ir) (finir =vous finissez (you finish)

17 = -s (prendre = tu prends)

18 = C -ent can't be a future tense ending

hope I helped !!

15.Which of the following endings may be added to a regular present tense -ER verb?
- es
Exemple : "danser" : je danse,tu dansES, il-elle-on danse,nous dansons,vous dansez,ils-elles dansent.

15.Which of the following endings may be added to a regular present tense -IR verb?
-  issez
Exemple : "rougir" : Je rougis, tu rougis, il-elle,on rougit, nous rougissons, vous rougISSEZ, ils-elles rougissent.
 

17.Which of the following endings may be added to a regular present tense -RE verb?
 -s
Exemple : "vendre" : je vends, tu vends, il-elle-on vend, nous vendons, vous vendez,ils-elles vendent

18.Which of the following is not a future tense ending?
 -ent