Điền a, an, the

điền a,an, the
8. I want to travel around
_world when I grow up.
9. Yesterday my mother had__
terrible headache.
10.
Where are \__kids? They are playing outside.
11.
Peter is_____
most hard-working student I've ever known.
12.
It is cold because
_heating systems is broken.
13.
Did you buy____
pair of shoes yesterday?
14
Earth orbits around_____ Sun
15.
She took_____
hamburger and _apple, but she didn't eat_ _apple.
16.
A boy and a girl is arguing over there, I think I___ know boy.
17.
My grandfather sent me _ letter and gift but I haven't received____letter
18.
My mom is____ best mom in____ world
19.
Would you like____ glass of water