seems strange to us is the troublesome boy is getting along well with all his teachers.
A. It; that
B. What; how
C. It; how
D. What; that
网友回答
A. It; that
B. What; how
C. It; how
(答案→)D. What; that
解析：考名词性从句。第一空是主语从句，从句缺主语用what，第二空是表语从句，从句的成分完整用that。句意：我们看起来所奇怪的是那个麻烦的男孩很容易相处。故D正确。