The boys often play football in afternoon.A. /; anB. the; anC. /; theD. a; the

问题补充：

The boys often play football in afternoon.

A. /; an

B. the; an

C. /; the

D. a; the

答案：

A. /; an

B. the; an

(答案→)C. /; the

D. a; the

解析：考查冠词。句意为：那些男孩下午经常踢足球。Play意为“打球、踢球”，时，后面球类名词前不要任何介词；in the afternoon是固定短语，泛指的“在下午”。故选C。