Question

Choose the right option:

While I _____in the library, someone threw a ball through the window.

A) was sitting

B) was seated

(C) had been sitting

(D) am sitting​

Answer 1

While I was sitting in the library, someone threw a ball through the window.

• We use ''was sitting'' in past continuous sentences.

• The past continuous tense is also known as past progressive tense.

• It refers to an action that was continuous at some point in the past.

• The past continuous tense is the combination of ''was/were + Verb-ing''.

• In the above example, we use the past continuous tense ''was sitting''.

There are four kinds of past tenses:

1) Simple Past Tense: I went to the park.

2) Past Continuous Tense: I was going to the park.

3) Past Perfect Tense: I had gone to the park.

4) Past Perfect Continuous Tense: I had been going to the park.

Answer 2

Answer:

• The right option is : A) was sitting.

• So the complete sentence is : While I was sitting in the library, someone threw a ball through the window.

• 'Was' is an auxiliary verb of Past Continuous Tense.

• In Past Continuous Tense after auxiliary verb 'ing' is used with main verb and here it is : Sit + ing = Sitting.

• So here in the blank space Past Continuous Tense has been used.