The boy _____ lost is crying there．
How do you know he gets lost？（ ）
| A． |
whose |
B． |
who |
C． |
who's |
Mr. Brown told his son not ________ the paintings in the museum.
| A． |
touch |
B． |
to touch |
C． |
touching |
D． |
touched |
They have been friends ________ they first met.
| A． |
since |
B． |
while |
C． |
before |
D． |
after |
— Excuse me, what is Nick doing?
— Look! He ________ flowers outside.
| A． |
waters |
B． |
watered |
C． |
is watering |
D． |
has watered |
This year, the family went camping on ________ Day, June 1st.
| A． |
Child |
B． |
Child’s |
C． |
Children |
D． |
Children’s |
We must clean up ________ classroom before going home.
| A． |
we |
B． |
us |
C． |
our |
D． |
ours |