Bring an extra pencil with you __________ something goes wrong with this one during the exam.
--These books are both interesting and instructive.--No wonder they __________ the youth.
I _________ have written to him because he phoned me shortly afterwards.
Lucy is a shy girl, but can you imagine _________ with the boss in Japanese?
Shelly had practiced hard for the driving test so that she could be sure of passing it on her first_________.
Recently I bought an ancient Chinese painting, _________ was very reasonable.