A colleague has offended a customer and asks for your advice. You want to be direct without being unkind.

Complete the conditional shown above. Make the ending specific to this situation, rather than choosing a random grammatically possible clause.

1. Finish it. Complete the advice and give a reason for it.
2. Say it naturally. Read the complete sentence aloud and check that the meaning is clear.
3. Go further. Add one sentence explaining the situation or consequence.

Extra challenge: Change an important detail in the situation and produce a new conditional that fits.