1）--Will you please read my letter and correct the mistakes,_____？
--Sure,I will.
A)if so B)if some C)if some D)if necessary
2）You may have some trouble in writing the article,_____?
A)if not B)if so C)if that D)If any
3）I would have come to your party had it been possible, but I _____so busy.
A)had been B)were C) was D)would been
4）We all know the truth _____there are ,water and sunlight ,there living things.
A)wherever B)That C)Where D)that wherever
5)The whole town was deadly quiet ______a few day 's bark.
A)besides B)except C)in addition to D)except
6)Although students are often told not to cheat in examinations,the _____continues.
A)practice B)deed C)behaviour D)skill
7)She has long been working as a chemistry teacher ,______ordinary teachers in our school.
A)one of whom B)one of which C)and one of many D)one of many