Ex. 1 The Bering Strait is a sea strait between Chukotka and Alaska. It A... * 86 km wide at its narrowest point and 90 meters deep at its deepest point. There are three small islands in the strait. Scientists believe that 20,000 years ago Chukotka and Alaska B... no sea between them. The water came at the end of the last ice age. Before that people could travel by land across the two continents, and this is how American Indians came to America C... Asia. The strait has the name of Captain Vitus Bering D... in 1725-1730 and 1733-1741 studied Kamchatka and the sea around it. Now E sea is called the Bering Sea. A 1) is 2) has been 3) was B 1) hadn't 2) had 3) has had C 1) out 2) of 3) from D 1) which 2) what 3) who E 1) this 2) these 3) those