Evenifhisletter____tomorrow,it____toolatetodoanything.
Thismissileisdesignedsothatonce_____nothingcanbedonetoretrieveit.
Evenifhisletter()tomorrow,it()toolatetodoanything.
____Thewaterleftinthekettle,thedoctorputseveralthingsheunwrappedfromahandkerchief.
Thecompositionscontainedsofewerrorsthattheteachergotthestudents_____oneanother’spapers.