• We haven't met for a long time.

• How long have you had it?

• I haven't had such a delicious meal before.

• In spite of the work being very hard, we enjoyed doing that job.

1) It is a long time since we last met.
=> We haven't met for a long time2) When did you it?
2)

=> How long ago did you have it?

3) This is the first time I had such a delicious meal.
=> I haven't had such a delicious meal before.

4) Even though the work was very hard, we enjoyed doing that job. (in spite of)
=> In spite of the work being very hard, we enjoyed doing that job

#yuno