Fill in: is, are, was, were 1. 1. The Tower of London …… located in the East End of London. 2. 2. It ……. known as a famous landmark, museum and fortress. 3. 3. The Crown Jewels …….. housed there. 4. 4. The oldest building, the White Tower, ……. built by William the Conqueror in the 11 th century. 5. 5. The Tower of London ……. used as a prison for many years. 6. 6. Many people ……… executed in the Tower. 7. 7. The Tower … guarded by the Yeoman Warders. 8. 8. They ……. also called Beefeaters. is are was were is are

1. The Tower of London is located in the East End of London.
(Explanation: We use "is" with singular nouns to show something in the present tense.)
2. It is known as a famous landmark, museum and fortress.
(Explanation: Again, we use "is" as it is singular and in the present tense.)
3. The Crown Jewels are housed there.
(Explanation: We use "are" with plural nouns to show something in the present tense.)
4. The oldest building, the White Tower, was built by William the Conqueror in the 11th century.
(Explanation: We use "was" with singular nouns to show something in the past tense.)
5. The Tower of London was used as a prison for many years.
(Explanation: Again, we use "was" as it is singular and in the past tense.)
6. Many people were executed in the Tower.
(Explanation: We use "were" with plural nouns to show something in the past tense.)
7. The Tower is guarded by the Yeoman Warders.
(Explanation: We use "is" as it is singular and in the present tense.)
8. They are also called Beefeaters.
(Explanation: We use "are" with plural nouns to show something in the present tense.)

Step-by-step solution:
- Identify the subject of each sentence (The Tower of London, It, The Crown Jewels, The oldest building, Many people, The Tower, They)
- Determine if the subject is singular or plural (The Tower of London, It, The oldest building, The Tower are singular; The Crown Jewels, Many people, They are plural)
- Check if the sentence is in the present or past tense (Sentences 1, 2, 3, 7, 8 are in the present tense; Sentences 4, 5, 6 are in the past tense)
- Use the appropriate form of "is", "are", "was", or "were" based on the subject and tense of each sentence.
- Fill in the correct form of the verb in each sentence (is, are, was, were) based on the above analysis.