BeijingNationalStadium，theshowpieceoftheBeijingOlympics...

問題詳情：

Beijing National Stadium，the showpiece of the Beijing Olympics，has fallen into disuse since the end of the games，_________it difficult to make a profit

A．make                             B．to make             C．making                      D．made

【回答】

知識點：分詞

題型：選擇題