-Tom isn't at school today.He ____ ill at home. -I'm not sure,let me call him. A may be B must be
问题描述:
-Tom isn't at school today.He ____ ill at home. -I'm not sure,let me call him. A may be B must be
答
A
根据后面的I‘M NOT SURE.可知TOM 不一定是病了.