单项选择题
A．the cut surface can heal more quickly B．open wounds on the tree run the less risk of getting diseased C．a gardener can do pruning more easily D．the leaves can interfere
A．The police could not see them in the dark. B．Policemen did not have guns. C．They could hide in the shop. D．There were not enough policemen to catch them all.
A．Latin and Greek B．Latin, Green, French and German C．American history and German D．French and German