答案：C分析：改为去to，let后无to参考译文：指挥用信号和姿势让乐

答案：C分析：改为去to，let后无to参考译文：指挥用信号和姿势让乐师们知道什么时候演奏不同的乐曲。难度：1

Kết quả (Anh) 1:

Answer: c analysis: to go after to,let no to text: command signals and gestures let the musicians know when playing different pieces of music. Difficulty: 1

Kết quả (Anh) 2:

Answer: C analysis: to go to, no reference to translation later let: command signals and gestures to let the musicians know when to play different music. Difficulty: 1

Kết quả (Anh) 3:

Answer: C analysis: changed to, let no text: command uses signals and gesture to let the musicians to know when to play different music. Difficulty: 1