Fill in the blanks in the text with the correct options from the choices provided. Then, write the chosen numbers in the table under the corresponding letters. The text is about the Bering Strait. Options for A are: 1) is, 2) has been, 3) was. Options for B are: 1) hadn't, 2) had, 3) has had. Options for C are: 1) out, 2) of, 3) from. Options for D are: 1) which, 2) what, 3) who. Options for E are: 1) this, 2) these, 3) those.

Explanation:

The task is to fill in the gaps in the text about the Bering Strait with the most suitable grammatical forms from the given options. Let's analyze each gap:

• A: The sentence states 'The Bering Strait is a sea strait between Chukotka and Alaska. It A ______ 86 km wide...'. The verb 'is' (option 1) correctly describes a current state or fact about the strait's width. 'Has been' (option 2) implies a past state that may or may not continue, and 'was' (option 3) refers to a past state only. Therefore, 'is' is the most appropriate choice.
• B: The sentence reads 'Scientists believe that 20,000 years ago Chukotka and Alaska B ______ no sea between them.' This refers to a past situation where there was no sea. The structure 'Chukotka and Alaska had no sea' (option 2) is the correct way to express possession or existence in the past. 'Hadn't' (option 1) would be used in a negative construction, and 'has had' (option 3) is present perfect.
• C: The sentence is 'Before that people could travel by land across the two continents, and this is how American Indians came to America C ______ Asia.' This sentence is describing a connection or origin related to Asia. The preposition 'from' (option 3) correctly indicates the origin or direction of travel into America from Asia. 'Out' (option 1) and 'of' (option 2) do not fit grammatically or contextually here.
• D: The sentence states 'The strait has the name of Captain Vitus Bering D ______ in 1725–1730 and 1733–1741 studied Kamchatka and the sea around it.' This gap needs a relative pronoun or conjunction to connect the name of the strait to the person who explored it and the dates. 'D ______ in 1725–1730' implies that Bering was active during this period. 'Who' (option 3) is the correct relative pronoun to refer to a person (Captain Vitus Bering) and introduce a clause describing his actions and the time frame. 'Which' (option 1) refers to things, and 'what' (option 2) is a determiner or pronoun used in questions or with noun clauses.
• E: The sentence concludes 'Now E ______ sea is called the Bering Sea.' This gap needs a demonstrative pronoun to refer to the specific sea being discussed. 'This' (option 1) is used to refer to a singular noun that is close or has just been mentioned. The sentence is clearly identifying the current name of the sea. 'These' (option 2) and 'those' (option 3) are plural demonstrative pronouns. Therefore, 'this' is the correct choice.

Based on this analysis, the choices are:

• A: 1) is
• B: 2) had
• C: 3) from
• D: 3) who
• E: 1) this

Now, let's fill these into the table:

Answer: The chosen numbers are 1, 2, 3, 3, 1 for A, B, C, D, and E respectively.