单项选择题[A] They may be homesick, and feel insecure. [C] They may try to attract other people’s attention. [B] They are either cold or very sick. [D] They want to protect themselves from physical injuries.
单项选择题[A] She learns English quickly. [C] Her English is very good. [B] Her English isn’t very good. [D] She learns new sentences slowly.