You can’t imagine that a well-behaved gentleman __________ be so rude to a lady.

With the help of the smart phones, you ____ video chat with your friends on the phone.

 --My computer ____start, no matter how hard I try.--It might have crashed.

--We need a person very much to think up a creative idea.--________ the new manager have a try?

We can hardly believe such a young boy ______ travel around the world all by himself.