语法与词汇 Professor Li was asked to _____ his speech in order to allow the students to raise question.无

【正确答案】 A

【答案解析】句意：李教授被要求压缩其演讲内容，好为同学们留出提问的时间。 condense压缩。 conduct实行。 constrain限制，约束。converge聚集，汇集。