Danny can blue and yellow green.
| A．makes；mixing | B．make；to mix |
| C．to mix；making | D．mix；to make |
The World Environment Day was June 5th，2021.（ ）
| A． |
fifty；on |
B． |
fiftieth；on |
C． |
fifties；in |
Instead of sitting around and wasting_____days，we should begin to change______.（ ）
| A． |
ours；ourselves |
B． |
our；us |
C． |
our；ourselves |
If you want to ask for sick leave，you must get your teacher's first.（ ）
| A． |
achievement |
B． |
instrument |
| C． |
agreement |
D． |
-Have you seen TV program Volunteer？
-Yes，I have never seen such educational program.（ ）
| A． |
a；the |
B． |
the；an |
C． |
the；a |
﹣﹣﹣In m opinion，keeping traffic rules is very important for road safety.
﹣﹣﹣________ Safety comes first.（ ）
| A． |
That's all right. |
B． |
I am sorry. |
| C． |
I agree. |
D． |
Sounds bad. |