Here are the best answers for each blank in the passage:

1. **(1)** A. **is**
The craft **is** famous.

2. **(2)** A. **to speak**
I went there last week **to speak** about it.

3. **(3)** C. **to make**
It takes four workers three days **to make** a drum.

4. **(4)** A. **because of**
They have to carefully assess **because of** the sound it makes.

5. **(5)** B. **with**
Doi Tam drums are not only famous in Vietnam **with** other countries.

So the completed passage would read:

Doi Tam, a traditional craft village in Ha Nam. We went there last week. The craft **is** famous for its drum making techniques, in Ha Nam Province last month. The skill was first introduced to the village sometime in the 8th or 9th century. Today there are more than six hundred drum makers living in Doi Tam village. I was amazed to see big drums in front of every house in the village. People **to speak** about it takes four workers three days **to make** a drum with a diameter of 1.5 metres. To make a drum, the craftsmen have to follow an eight stage process. Stretching the drumhead is the most challenging stage **because of** the sound it makes. The other steps do not require such high skills. Nowadays, Doi Tam drums are not only famous in Vietnam **with** other countries such as Laos, Cambodia and the USA.