Choose the best answer

1.Can you tell me the reasons for ... Mother's day.
A.celebrate     B.celebrated     C.celebrates      D.celebrating
2.The car...he has just bought is very expensive.
A.who  B.whom  C.which D.whose
3.His sense... humor distinguishes his from others.
A.of  B.from  C.about  D.with
4.Liz is watching TV...she has an exam tomorrow.
A.because  B.despite  C.even thought   D.in spite of
5...more trees are plants,we will have more shady places.
A.if  B.unless  C.that  D.so that
6.You should gather all things in your house...you leave.
A.while  B.after  C.until  D.before
7.We are talking about the preservation of....resources.
A.nature  B.natural  C.naturally  D.naturalize
8.The new air conditioner not only makes such big noise...use much electricity.
A. as well as  B.together with  C.but also  D.the same as
9.Lighting accounts...10 percent of my electricity bill.
A.with  B.for    C.about   D.of
10.You can save electricity by using a/an....buld instead of an ordinary one.
A.energy-save  B.energy-saving  C.save-energy   D.saving-energy