Which is the correct form of the verb provided to correctly complete the sentence.

Some of the references ______ to have been lost in translation.

1) seem
2) seems

seems

seem

To determine the correct form of the verb to complete the sentence correctly, we need to identify the subject of the sentence. In this case, the subject is "Some of the references." The verb form must agree with the subject in terms of number, so we need to decide whether "Some of the references" is considered singular or plural.

The word "some" indicates an indefinite quantity of references, which suggests that there are multiple references. Therefore, the subject is plural.

Now, we can consider the two options provided:
1) "Seem" - this is the plural form of the verb "to seem."
2) "Seems" - this is the singular form of the verb "to seem."

Since the subject "Some of the references" is plural, the correct form of the verb is "seem."

Therefore, the correct answer is:
1) seem