—Did Alan enjoy seeing his old friends yesterday?—Yes, he did. He ______ his old friends for a long time.
— Hi, Tracy, you look tired.I am tired. I_______ the living- room all day.
— Did Mike call ______you yesterday?— No, but this morning he called _______my office.
It is such a modem machine ____few of the workers know how to operate it.
_____ in bed, we listened to the heavy rain _______ the window.
Is_____ necessary ____them to stop ________ every two hours?