一、单项选择
从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
1. Jim and Tim are talking _______ the phone.
A. at B. on C. with D. in
2. Today is Sunday. My family _______ all at home.
A. am B. is C. are D. be
3. It’s ten o’clock in the morning. Dale _______ for a test.
A. study B. studies C. studying D. is studying
