Alice kept perfectly still, ______ that the dog might attack her. “It was the most ______ experience of my life,” she told me later.

—Shall we go to see him right now?—I’m afraid not. This weekend may be a ____time

Studies show that people are more        to suffer from back problems if they always sit before computer screens for long hours.

 His test results are not very _____. He does well one week and badly the next.

—— Can Li Hua help me with my English? —— I regret to tell you her English is＿＿＿＿＿yours.