The one across the street is less expensive than the supermarket

The English teacher has been teaching at our school for 3 years

My doctor said "You shouldn't eat in front of the television"

If you don't study harder, you won't pass the exam

Hanoi suburban areas aren't as noisy as its urban districts

How about going to uncle Huan's farm this weekend?

Sarah has difficulty in learning to read in Japanese

The book was too complicated for us to understand

Sandy studied more diligently than she is doing now.

The first books were invented by the Chinese more than a thousand years ago.