Question 3 :
1 . is ⇒ does
2 . go ⇒ goes
3 . is ⇒ ∅
4 . Do ⇒ Does
5 . play sometimes ⇒ sometimes play
6 . isn't ⇒ doesn''t
7 . has ⇒ have
8 . alway ⇒ thêm s ở cuối
9 . plays ⇒ play
10 . goes ⇒ go
11 . cats ⇒ cat
12 . is ⇒ ∅
13 . doesn't ⇒ ∅
14 . buyes ⇒ buys
15 . rain ⇒ rains
16 . circle ⇒ circles
17 . are work => work
18 . flow usually -> usually flow
19 . always doesn't => doesn't always
20 . is belong => belongs
#Kun
