You may find the key to the maths problem on page 107.— Ah, it’s so simpleI wonder why I _____ of that[ ]

_____ of personal preference

amonth do you do voluntary work —Twice a month.

very tired when I got home, and I ______straight to bed.

Was Dr Bethune ___________— Yes, he came from _________ and gave his life to the Chinese people .