单项选择题
Which will help you to mingle in the crowd？（）
A、Be confident to show your talent and don’t be afraid of speaking English.B、Stay humble and keep a low profile instead of showing your talent.C、Always think carefully and speak perfect English to avoid make any mistakes.
单项选择题 John is a nice guy，isn’t he？（降调）This question tag ____.（）
单项选择题 Your birthday was last week.wasn’t it？（升调）This question tag ____.（）
单项选择题 Which of the following values have been discussed in the video（）
