Спо .

put the verbs into the present perfect simple or past simple.

1) ibm (develop) fortran in the mid-1950s to create scientific and engineering applications.
2) john (be) a software engineer since may 2006.
3) once l (realize) that i had a virus, i ran my virus protection program.
4) (you ever work) as a web designer?

1. developed

2. has been

3. realized

4. Have you ever worked?

Объяснение:

Put the verbs into the present perfect simple or past simple.

1) IBM developed Fortran in the mid-1950s to create scientific and engineering applications.

2) John Has BEEN a software engineer since May 2006.

3) Once l REALIZED that I had a virus, I ran my virus protection program.

4) (you ever work) HAVE YOU EVER WORKED as a web designer?