V. Combine each pair of sentences to make one sentence, using words given. 
1. Lang Lieu couldn’t buy any special food. He was very poor.  (because)
⇒ Lang Lieu couldn’t buy any special food because he was very poor

2. The tortoise was running. The hare was sleeping. (while)
⇒ While the tortoise was running, the hare was sleeping

3. The girl worked hard. Her stepmother wasn’t happy. (although )
⇒ Although the girl worked hard. Her stepmother wasn’t happy
4. They spent nearly a month preparing for it. The festival only lasted for three days  (however)
⇒ They spent nearly a month preparing for it.However;the festival only lasted for three days
5.Saint Giong was unable to talk, smile or walk. He was three years old. ( even though )
⇒ Saint Giong was unable to talk, smile or walk even though he was three years old.
6.  He is not very rich. He donates generously. ( but)
⇒ He is not very rich, but he donates generously

=>

1. Lang Lieu couldn't buy any special food because he was very poor.

-> because S V : bởi vì

2. While the tortoise was running, the hare was sleeping.

-> while QKTD : trong khi

3. Although the girl worked hard, her stepmother wasn't happy.

-> although S V : mặc dù

4. The festival only lasted for three days; however, they spent nearly a month preparing for it.

-> however : tuy nhiên

5. Saint Giong was unable to talk, smile or walk even though he was three years old.

-> even though S V : mặc dù

6. He is not very rich, but he donates generously.

-> but : nhưng