Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he phoned me from the farm just now.

There is______ “u” and ______ “s” in the word “use”.

My father goes to work ______ car. [ ]

Look，your father is playing the piano over there.—He________ be my father. He has gone to Beijing.

Shelly is good at English,so she is never _____speaking to foreigners.