1.Its a big factory. Five hundred people.....(employ) there. 2.Water.....(cover) most of Earths surface. 3.Most of the Earths surface.....(cover) by water. 4.The park gates.....(losk) at 6.30 p.m. 5.The letter.....(post) a week ago and it......(arrive) yesterday.
1. Are employed
2. Covers
3. Are covered
4. Are locked
5. Was posted a week ago and it arrived
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