Conditional Sentences Completion

In this problem, we need to match three different types of conditional sentences with their correct phrases. Let's look at the structure of conditional sentences.

Conditional sentences usually have two parts: the 'if' clause, which states the condition, and the main clause, which states the result. The verb tense in the 'if' clause determines the structure of the result clause.

Let's look at the first sentence: If I have enough time. The verb 'have' is in the present simple tense.

This tells us it's a first conditional sentence. This type is used for real possibilities in the future. We need to use 'will' plus the base form of the verb. So, the correct match is: I will go to the United States.

Now for the second sentence: If I had enough money. Here, 'had' is in the past simple tense.