Form opposite adjectives with negative suffixes: there is no doubt that drugs are (legal). it was quite (possible) for us to drive all the way from santander to seville in one day. he made an (successful) attempt to climb the highest mountain in the area. the dress she was wearing was quite (appropriate) for the weather. it was very (polite) of him to shout at his mother in front of his aunt. it was (reasonable) of them to say that. what they said is (true). we didn’t hit her at all.