.If their marketing plans succeed, they ____ their sales by 30 percent.
A．will increaseB．have been increasingC．have increasedD．would be increasing
A
考查if引導(dǎo)條件狀語從句的用法。主句用一般將來時，從句用一般現(xiàn)在時表將來。句意：如果他們的營銷計劃成功的話，他們的銷售額會增加30%。
點評：f引導(dǎo)條件狀語從句主句用一般將來時，從句用一般現(xiàn)在時表將來。
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