_, I must say my spoken Englishis not very good, so I hope you can speak slowly. In the second place, I’m notfamiliar with the topic.

Half of _____surveyed in 16 countries say they gofirst to their closest friend to share their deepest wishes and darkest fears

Listen! Is it Linda singing in the next room –No, it __________ be her. She is still in Shanghai.

Listen! There is a knock on the door．Who _____ it be?—It must be Jack．Just now I sent for him．

Dad, I’m fixing my bike, can you give me a hand—- Just . Be sure of your own ability.