MrFull apologized ______ the children ______ what he had done

If you want to go there,_____. [ ]

13．About 90 percent of the equipment presented by the administration，as well as the facilities ofour own，______made good use of in teaching．

______ he ______ from Beijing —No, he ______.

.—How _______the frog(雾) is!We can’t see clearly while riding.