Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
---Whatdoyouthinktheyareinpraiseof? ----_________________.
_______thecoachwascontentwithwas_____histeamwonthematch.
Weteachersmustseeto________thateverystudentcanunderstand.
Mary has been looking forward in the past 10 years to______the Great Wall.
It won’t be too long before we_____a way to smooth away these difficulties.