There is something wrong with his throat; ______, Michael has to give up the singing competition.
. I have taught hundreds of students,___________ having been working in their fields for years.
______, he still cannot make himself understood.
_________ is unknown to us all.
The village has developed a lot ______ we learned farming two years ago.
-----I hope to go to Beijing with you.-----If so,your holiday arrangement must________mine.