I ______ two letters yesterday.
-   wrote
 -   have written
 
 
We have not done much ______ the last week.
-   for
 -   since
 
 
I have been very busy ______ last week.
-   since
 -   for
 
 
Eggs ______ more expensive this month.
-   have become
 -   became
 
 
They ________ at the same hotel for ten years.
-   have stayed
 -   stayed
 
 
I ______ this class now for two years.
-   have taught
 -   taught
 
 
I ______ him at the theatre last evening.
-   saw
 -   have seen
 
 
We ______ to the seaside last summer.
-   went
 -   have gone
 
 
I have been looking for you ______ two hours.
-   for
 -   since
 
 
He ______ a teacher when I knew him.
-   was
 -   has been