So uncertain ______ about the background of his audience that he didn’t know how to start his lecture.

TOPIC: Write a composition about the charms of Britain, based on the text “The Beauty of Britain” by J.B.Priestley.

Use the following outline as a guide.

· the geographical variety

· the surprises of the landscape

· the balance between Nature and Man

既然你已经做出承诺，就要信守诺言。

我现在很忙，但一有时间，我会考虑你的计划。

当我发言超时的时候，主持人打断了我。

到目前为止，还没有人提出准确预报地震的方法。

现在我们意识到环境污染已成为一个日益严重的问题。

Since he is usually a cautious person, this sudden promise he has made regarding the investment is ______. (question)

Among all the animals, dogs are the most ______ companions for human beings. (faith)

Martin Luther King stood out to lead black people to fight against racial ______. (equality)

A number of big names were recruited in the hope that their presence would ______ the university. (glory)