How can I prevent a form-control from taking a new line in Bootstrap

Question

I'm trying to get the dropdown menu to appear next to text "Pay every". How can I do this with bootstrap classes without editing the css or giving it a new custom class?

<div class="form-group">
    <label class="col-sm-2 control-label">Offer:</label>
    <div class="col-sm-2"><input type="text" class="form-control" placeholder="$1000"></div>
    <div class="form-group">
        <div class="i-checks col-sm-1">
            <label class="control-label"> <input type="radio" value="option1" name="a" checked> All at once </label>
        </div>

        <div class="i-checks col-sm-2">
            <label class="control-label"> <input type="radio" value="option1" name="a"> Pay every </label>
            <select class="form-control" name="every" disabled >
                <option>2 weeks</option>
                <option>1 months</option>
                <option>2 months</option>
                <option>3 months</option>
                <option>6 months</option>
            </select>
        </div>

    </div>
</div>

Answer 1

The form-inline class is the bootstrap class for creating forms with inline controls. Everything within each form-group is displayed inline.

<div class="form-inline">
    <div class="form-group">
        <label class="control-label">Offer:</label>
        <input type="text" class="form-control" placeholder="$1000">
    </div>
    <div class="form-group">
        <div class="i-checks">
            <label class="control-label"> 
            <input type="radio" value="option1" name="a" checked> All at once </label>
        </div>
    </div>
    <div class="form-group">
        <div class="i-checks">
            <label class="control-label"> <input type="radio" value="option1" name="a"> Pay every </label>
            <select class="form-control" name="every" disabled >
                <option>2 weeks</option>
                <option>1 months</option>
                <option>2 months</option>
                <option>3 months</option>
                <option>6 months</option>
            </select>
       </div>
    </div>
</div>

You can see how it looks live here: http://www.bootply.com/WXOIcKQN6y

Answer 2

Simply put it in a new col?

<div class="row">
<div class="col-sm-4 form-group">
    <label class="control-label">Offer:</label>
    <input type="text" class="form-control" placeholder="$1000">
</div>
<div class="col-sm-4 form-group">
    <div class="i-checks">
        <label class="control-label"> 
        <input type="radio" value="option1" name="a" checked> All at once </label>
    </div>
</div>
<div class="col-sm-4 form-group">
    <div class="i-checks">
        <label class="control-label"> <input type="radio" value="option1" name="a"> Pay every </label>
        <select class="form-control" name="every" disabled >
            <option>2 weeks</option>
            <option>1 months</option>
            <option>2 months</option>
            <option>3 months</option>
            <option>6 months</option>
        </select>
   </div>
</div>