If anyone wants to say something in class, you ________ put up your hands first.

It’s a beautiful，sunny day!There ________ many people here on vacation.

Bob plans _______ care of the sick kids in the hospital during the winter vacation.

I’m going to San Francisco for a couple of days.—— ________. I wish I could get away for a while.

Visitors from around the world came to this waterside village and were amazed at this ________ bridge，which had been hundreds of years old.