The custom has been___since the 18th century
Parents should pay attention to areas ______ their child is having difficulty and spend extra time helping him or her.
I don’t think the price of gas will go down this week, ______ ?
______ the extreme levels of air pollution, city authorities have started to take measures to quickly reduce pollution levels and protect city dwellers.
Thanks to Mrs Smith, the father and the son eventually ______after ten years’ cold relationship between them.
I’d appreciate ______ if you can turn the radio down, for my baby is sleeping.