1．Keep up your courage, since life is made up of joy and ____________(sad)．
2．I'll never forgive myself ____________ making such a mistake.
3．The chair looks rather hard, but in fact it is very comfortable ____________(sit) on.
4．We arranged to meet at 7：30, but she never turned ____________.
5．Don't handle the vase as if it ____________(be) made of steel.
6．____________ was pretty obvious from her voice that she disliked the young man.
7．They held a party in ____________(celebrate) of her safe arrival.
8．We're looking forward to ____________(reach) our goal of forming our own band.
9．She apologized ____________ the shopkeeper ____________ having no ready cash on her.
10．I'm too busy these days. Please remind me ____________(attend) the meeting on Friday.
[答案] 1.sadness 2.for 3.to sit 4.up 5.were
6．It 7.celebration 8.reaching 9.to; for 10.to attend
