问题补充：
There were no tickets for Fridays performance.
A. preferable
B. possible
C. considerable
D. available
答案：
A. preferable
B. possible
C. considerable
D. available
解析：available （=capable of being used; that may be obtained）可利用的; 可以找到的：1） These tickets are available for one month. （这些票的有效期一个月。） 2） Is there a doctor available? （有否可以找到大夫？） 3） A limited number of seats are still available. （仍然还有少量座位。）
