The Olympics in London is expected to attract millions of visitors from home and abr

问题补充：

The Olympics in London is expected to attract millions of visitors from home and abroad.

A. to hold

B. to be held

C. held

D. to be holding

答案：

A. to hold

(答案→)B. to be held

C. held

D. to be holding

解析： 考查非谓语动词。根据谓语动词is expected 被预测，可知The Olympics还没有举行，故用不定式的被动式表示将来，句意：在伦敦将要举行的奥运会被预测会吸引来自世界各地数百万游人。故选B。