Choose the appropriate words in brackets to complete the sentences. 1.The number of young people who do not smoke has Considerably (increased/strengthened) recently. 2.My sister was advised to (reject/remain) indoors for a week. 3.They got the VIP (treat/treatment 4.In the process of the repairs we had to (increase/strengthen) the foundation of our cottage so that it could take more weight from the stone walls. 5.Why don't you try to (establish/involve) at least decent relations with your opponents?