2. Sắp xếp thành 1 câu hoàn chỉnh :
a. book / a / this / blue / is.
this is a blue book.
b. orange / an / and / this / is / yellow/ pencil.
this is an orange and yellow pencil.
c.book / it / is / a.
It is a book.
d.this / a / is / desk / brown.
This is a brown desk.
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