Jack has made great achievements in his work, and the harder he works, the more _________ he becomes.

There was a hole in the door, through which I sight of Mr. Brown sitting in a chair.

Jim is very sick these days. He coughs so badly.— In my opinion, he really ________ listen to the doctor and cut down on smoking.

The boy is afraid ________ cross the bridge, because he is afraid ________ falling into the river.

News came from the school office ___ Wang Lin had been admitted to Beijing University