内容正文:
Lesson 9
Open and Close
A
H
J
E
C
D
G
B
F
I
K
a
e
i
f
A
I
E
F
B
D
C
G
J
H
K
L
a
e
i
f
A
I
E
F
B
D
C
G
J
H
K
L
M
a
e
i
f
A
I
E
F
B
D
C
G
J
H
K
L
M
a
e
i
f
A
I
E
F
B
D
C
G
J
H
K
L
N
N
M
__ ___ ____
N
n
k
K
m
M
L
l
K
indow
M
Open the window.
Close the window.
__ _ __ __
Open (Close) your .
1.完成活动手册第一题,第三题。
2.找出你身边的k, l, m, n并写下来。
Homework
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