Question

I didn't know how long she——------these(sit).fill in the correct tense form

Answer 1

I didn't know how long she had been sitting there.

Explanation:

• In this sentence, the given sentence has dependent and independent clause.
• The dependent clause is the past tense form.
• So, the independent clause should be in the form of "past perfect continuous tense".

• The "past perfect continuous tense" is the tense which used to describe an activity that "had been going" on "around a past time".
• As per the given word(sit), the "past perfect continuous" of sit is had been sitting.

To know more:

Choose the correct tense form

1. ............. Paid our bill and ascertained the location, we got into the car.

a) Had b) Have been c) Having d) Has

2. Choose the correct prepositions

All........... Once the church clock struck twelve

https://brainly.in/question/14142655

Fill in the blanks choosing the correct tense form of the verbs given in brackets :

1) She ____ her work just now. (finished/has finished/finishes)

2)The officer _____ the spot shortly. (visited/will visit/ has visited)​

https://brainly.in/question/11155563