单项选择题
The senator agrees that his support of the action would ______ his chances for reelection.
单项选择题 The manufacturers hoped that the motor show would ______ their car sales.
单项选择题 It was all agreed that the first problem the new government would have to ______ was unemployment.
单项选择题 In his ______ to further knowledge of the universe, man has now begun to explore space.
