There are large number of people there so we soon lost sight of him.A. the; ×B. ×; theC.

问题补充：

There are large number of people there, so we soon lost sight of him.

A. the; ×

B. ×; the

C. a; ×

D. a; the

答案：

A. the; ×

B. ×; the

(答案→)C. a; ×

D. a; the

解析：考查冠词。第一空固定词组a large number of许多，大量，修饰可数名词复数形式。第二空也是固定词组lose sight of看不见。故C正确。