def alphabet_construct(seq, alphabet):
    """ Returns True if string s can be constructed from the set of length-1 strings
    alphabet and False otherwise.

    Example:
    >>> alphabet_construct("hello", {"a", "b", "h", "e", "l", "o"})
    True
    >>> alphabet_construct("hello", {"a", "b", "h", "e", "o"})
    False
    """
    for i in seq:
        if i in alphabet:
            continue
        else:
            return False
    return True