He must have done nothing but ____
He must have done nothing but ____
have done nothing but do 、done 、doing、to do?
he must have done it yesteraday,――?he must have done it for
He ____ the radio carefully,but he ____ nothing.
must have been done must have done
They must have done their homework yesterday,____?
关于 must have done.
MUST have been done
must have done
must have done用法
must have been done/must be done
关于宾语从句的He siad ____ he had done nothing wrong and ____ his f