Two middle-aged passengers fell into the sea. _______, neither of them could swim.

A. In fact　　 ????????????? B. Luckily　　 ????????????? C. Unfortunately　　 ????????????? D. Naturally

Two middle-aged passengers fell into the sea. ______, neither of them could swim.

   A. In fact      B. Luckily      C. Naturally          D. Unfortunately

Two middle-aged passengers fell into the sea. ________, neither of them could swim.

A. In fact　　　 　B. Luckily　　　　 C. Unfortunately 　D. Naturally

Two middle-aged passengers fell into the sea. ____, neither of them could swim.

A. In fact       B. Luckily                . Naturally        D. Unfortunately