Explanation

The phrase “at this time tomorrow” refers to a future continuous action, so we use future continuous tense.

Example: At this time tomorrow, I will be sitting on the plane to Paris.

Explanation

I have not seen you for a long time.

میں نے آپ کو بہت دنوں سے نہیں دیکھا۔

"Have not seen" is the present perfect negative form.

- The subject "I" pairs with "have" (not "has").

Explanation

 Last year I worked in a bank.

پچھلے سال میں نے ایک بینک میں کام کیا۔

"Last year" indicates the past, so the simple past tense "worked" is appropriate here.  

Explanation

Past simple tense describes an action completed in the past.

“Went” is the past form of “go”, indicating the action already happened.

Explanation

The sentence “I have been working on the problem” uses have/has + been + verb-ing, which is the present perfect continuous tense.

It indicates an action started in the past and is still continuing or recently stopped.