问题
选择题
The teacher, with 6 girls and 8 boys of her class, ________ visiting a museum when the earthquake struck.
A．was
B．were
C．had been
D．would be
答案
答案：A
由when the earthquake struck可知，要用一般过去时，排除C和D；又因为主语是单数the teacher，所以只有A正确。