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    • Join Date: Apr 2008
    • Posts: 154
    #1

    have become

    All the country 's big rivers flow from west to east, making transportation between the north and the south relatively difficult. As a result, railroads and highways have become indispensable for the nation's economy.

    Is it correct to use "have become" here? Can I use present tense "become" here?

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      • Canada
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    • Join Date: Apr 2007
    • Posts: 4,146
    #2

    Re: have become

    Quote Originally Posted by redgiant View Post
    All the country 's big rivers flow from west to east, making transportation between the north and the south relatively difficult. As a result, railroads and highways have become indispensable for the nation's economy.

    Is it correct to use "have become" here? yes
    Can I use present tense "become" here? no, not by itself
    But you can say '...highways became indispensable...'.

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