By the end of last summer, Alexander _______ his Ph.D.

Who ________ the boss tell him that?

If you want to be a telephonist, you should _________ your communication skills.

She had worked as a tourist guide before __________ a teaching career.

He ____________ abroad before I met him in Sydney.

After he had spoken, a _______ silence fell on the room.

She will work for a travel ___________ after graduation.

Marie ___________ the dream of a scientific career which seemed impossible for a woman at that time.

We would love _______ three cups of coffee.

___________ having a private tutor, he couldn’t get good marks at school.

Jack always wants to achieve high goals. He’s so ___________.

Please don’t ___________ when I am studying.

English is considered as one of our __________ languages.

Earl was one of the first American artists ___________ landscapes.

I am sorry that I can't ________ your invitation.