Solution:
Concept-The given sentence is obviously exclamatory. It is obvious because there is an exclamation mark at the end of the sentence and the words are jumbled.Consider the following options:
1. How fortunate that we should both be present. - This sentence also has a jumbled word order. This is not a confident sentence.
2. It's a good thing we're both here. - Because the words are in the correct order, this sentence is assertive. It does not, however, convey any shock.
3. It's strange that we're both here. - This sentence also has a jumbled word order. This is not a confident sentence.
4. It's strange that we're both here. - Because the words are in the correct order, this sentence is assertive. This sentence is also shocking.
Hence, the correct option is 4) It is strange that we should both be here.
