【推荐2】The _________ (expand) of tourism is slowed down by the lack of tourists on the island. (所给词的适当形式填空)

【推荐3】The rapid ________ (expand) of cities can cause social and economic problems, such as pollution and traffic problems.     (所给词的适当形式填空)

【推荐1】I am _________(privilege) to relay to you that you have won the first prize in the competition.
＝It is_________to relay to you that you have won the first prize in the competition. (所给词的适当形式填空)

【推荐2】Niagara Falls is a great tourist________ (attract), drawing millions of visitors every years. (所给词的适当形式填空)

【推荐3】With our product you can become a ________ (found) to begin with your career! (所给词的适当形式填空)