Complete the sentences

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Exercise 5: Complete the sentences
1. The pen is 4$. The book is 7$.
The
pen is_
the book (expensive)
The book is more expensive than the pen (expensive)
The pen is cheaper than
2. Long is not as careful as Tam.
the book (cheap)
Tam. (careful)
Long is
Tam is
Long. (careful)
3. This street is not so crowded as that one.
This street is
That street is
that one. (crowded)
this one. (crowded)