问题
选择题
The number of children who have lost parents to AIDS ___ to rise to over 26 million in 2011.
A．are expected
B．is expecting
C．are expecting
D．is expected
答案
答案：D
the number of sb作为主语时，相当于三单形式，从本句的内容可知本句为被动语态，故选答案为D。