I often thought of my childhood,____I lived on a farm.

She was too shy to speak____.

They promised____each other when they went to work.

He treats it____a request for information.

I____come yesterday ,but I could not.

Mrs.London has____that she is unable to get a job.

While I was waiting for her ,I killed time____looking in the show windows.

The red color can stimulate all our____,including appetite.

In a second-hand bookshop ,Billy came across a book which he thought was certainly a____edition.

A person with the blood type AB can_____any type of blood.