Question

She was very tired. She....letters all day long

Answer 1

She was very tired because She writes letters all day long.

Explanation:

• In the above sentence, all day long is an idiomatic expression that means during the entire day.
• All-day long or all day both have the same meaning and are used to describe the whole day activity of a person.
• For example, all day long he sells the confectioneries and gets tired.

Answer 2

Answer:

She was very tired. She read letters all day long.

• Instead of 'read' we can also write 'wrote' : She was very tired. She wrote letters all day long.

• Again it can be She was very tired. She typed letters all day long.

• So we can easily conclude that all ( 'read', 'wrote' and 'typed' ) are appropriate for the blank space.

• 'Read', 'wrote' and 'typed' are past from of verbs : 'Read', 'write' and 'type'.

• Here second sentence has followed the first sentence. 'Was' and 'tired' confirm that first sentence has been written in Past Indefinite Tense.