The man in the office ____be Mr. Black because he phoned me from London just now.
The man has ________ many things from the store.
—Whose Chinese book is this?—It could _____. He studies Chinese.
When he saw a wallet on the ground, he ______at once and turned it to the police.
He got the first prize in the singing competition. ____ exciting news!
The moonlight goes ____ the window and makes the room bright.