He________ his experiments and made a great contributionto our country.[ ]

Waiter: Here is the steak you ordered. Please _________and enjoy yourself.Customer: Thank you.

Why isn’t Cathy here yet— She _________ to be picked up at thestation

Is this the young engineer ________ you want to have ________ the computer for me

a newcomer in the team, but I have the __________ that I’ve seen that man before.