很高兴为您解答!
I do not think she is equal ____ this kind of work ,so I can not hire her.我不认为她能够胜任这份工作,所以我不能够雇用她
A.to do B.to doing
be equal to 胜任,相等,合适;媲;匹;
这里的to是介词,所以后面接名词或v-ing.
答案是【B】