By the time the police arrived, the thief (小偷) _________.

Shall I invite Ann to my birthday party tomorrow evening? —-Yes. It’ll be fine if you______.

I want to write __________ article about the great inventors in the world. Can you help me –Sorry, I don’t know much about __________ topic.

What a pity! Considering his ability and experience, he ____ better.[ ]

I’m familiar with you because your name ____ in our yesterday’s conversation many times