—When can I come for the photos？I need them tomorrow afternoon. —They be ready by 12p. m.

问题补充：

—When can I come for the photos？I need them tomorrow afternoon.

—They be ready by 12p. m.

A. can

B. should

C. might

D. need

答案：

A. can

(答案→)B. should

C. might

D. need

解析：因为can和might都可以表示可能性,而忽视了should可以表示对可能性的推测,且语气更强.