We use 'the' when referring to musical instruments in general contexts.

Abstract nouns used in a general sense do not take an article.

The word 'orange' begins with a vowel sound, so 'an' is correct.

A specific mosque is mentioned, so the definite article 'the' is required.

'Engineer' begins with a vowel sound, so 'an' is the correct article.

The definite article 'the' is used for unique landmarks or well-known places.

Before a singular countable noun starting with a consonant sound, 'a' is used.

The word 'interesting' begins with a vowel sound, so the article 'an' is correct.

**Rule:** The Future Continuous Tense (will be + verb-ing) can be used to imagine or predict a situation in the distant future. It describes what will be happening or what the general situation will be. Option (c) would imply the action is completed. Option (a) is for near-future plans. Option (d) is incorrect.

**Rule:** This is a First Conditional sentence ('if' + simple present, ... 'will' + base verb) expressing a real future possibility. The main clause shows the future result of the condition. 'will get' correctly expresses this future consequence. Option (a) would be used in a Zero Conditional for general truths. Option (c) and (d) are incorrect.