Put in a/an or the where necessary. If a/an/the are not necessary, leave an empty space (-).​

This exercise requires determining when to use the articles "a/an" or "the", or when to leave the space empty (-). Here is a step-by-step solution to the exercise with an explanation for each answer:

1. I have _______ orange in my bag.
Explanation: In this case, we should use the article "an" because the word "orange" starts with a vowel sound (/ɔː/).

2. My best friend has _______ cat.
Explanation: In this case, we should use the article "a" because the word "cat" starts with a consonant sound (/k/).

3. _______ elephant is the largest land animal.
Explanation: In this case, we should use the article "an" because the word "elephant" starts with a vowel sound (/ɪˈlɪfənt/).

4. We saw _______ movie last night.
Explanation: In this case, we should use the article "a" because the word "movie" starts with a consonant sound (/muvɪ/).

5. I want to buy _______ new bicycle.
Explanation: In this case, we should use the article "a" because the word "bicycle" starts with a consonant sound (/baɪsɪkl/).

6. Please give me _______ apple.
Explanation: In this case, we should use the article "an" because the word "apple" starts with a vowel sound (/ˈæpəl/).

7. _______ tiger is a carnivorous animal.
Explanation: In this case, we should use the article "the" because the word "tiger" is a specific noun referring to a particular type of animal.

8. I have _______ big house in the countryside.
Explanation: In this case, we should use the article "a" because the word "house" starts with a consonant sound (/haʊs/) and it is not a specific house.

9. _______ sun rises in the east.
Explanation: In this case, we should use the article "the" because the word "sun" is a specific noun and there is only one sun.

10. _______ stars are visible in the night sky.
Explanation: In this case, we should use the article "the" because the word "stars" is a specific noun referring to the stars in general.

I hope this explanation helps you understand when to use the articles "a/an" or "the", or when to leave the space empty (-) in this exercise. Let me know if you have any further questions!