31.English / . / is / more / Math / than / difficult / Math is more than difficult English. Math more is difficult than English. Math is more difficult than English. English is difficult maths more than. 32.than / houses / are / New / modern / old / houses / . / more / Old houses is more modern than new houses . New houses are more modern than old houses. New more houses is modern than old houses. Old houses are more new than modern houses. 33.than / are / more / expensive / bikes / . / Cars / Bikes are more than cars expensive. Cars are more than expensive bikes. Bikes more than are cars expensive. Cars are more expensive than bikes.