摘要： He the two pieces of wood together with glue.
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combine/unite/join(1)He ________ the two pieces of wood together with glue．
(2)All the countries ________ to fight diseases and poverty．
(3)Efforts and confidence ________ to make a full man．
(4)This path ________ the highway up ahead．
(5)Two atoms of hydrogen ________ with one atom of oxygen to form a molecule of water．