Use will for a decision made now: The doorbell is ringing. I'll get it. Use be going to for a prior plan: I'm going to visit my cousin this weekend. For predictions, will often states what you think, while be going to often points to present evidence.
Use worry for the action or experience of feeling concern. Use be worried when worried describes how someone feels. A thing can worry someone when it causes that concern.
Use the zero conditional for a fact, rule, or usual result: If a plant does not get water, it dies. Use the first conditional for a possible future condition and result: If the weather improves tomorrow, we will eat outside. After if, use a present form in both patterns.
Adverse means harmful or unfavourable, especially before a noun: adverse weather or adverse effects. Averse means unwilling or opposed, usually in a phrase such as averse to change or averse to taking risks.
Say has diabetes and mentions malaria, with no article before the disease name. Say has a cold because cold is countable in this meaning. The flu is also a familiar expression, but flu without an article is common in some varieties of English.
To burn the candle at both ends means to do too much over a period of time, especially by working or staying busy late and then starting early. Say, 'I have been burning the candle at both ends lately.' In a work conversation, a direct description of hours, deadlines, or support may be kinder and clearer.
Debauchery means excessive, self-indulgent behavior, often connected with pleasure and described with moral disapproval. It is a formal, strong word rather than a neutral description of having fun.
Choose a discourse marker for the job it does in the conversation. Use markers such as well to begin a response, actually to correct or clarify, however to show contrast, and anyway to return to a main point or move on.
In an English job interview, give a direct answer first, support it with a specific example, and connect that example to the role. Use polite questions to learn about the work and the team.