Question

Form opposite adjectives with negative prefixes: 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.

Answer 1

Illegal
impossible
unsuccessful
inappropriate
impolite
unreasonable
untrue

Answer 2

Here are the sentences with opposite adjectives using negative prefixes:

1. There is no doubt that drugs are illegal (legal).
2. It was quite impossible (possible) for us to drive all the way from Santander to Seville in one day.
3. He made an unsuccessful (successful) attempt to climb the highest mountain in the area.
4. The dress she was wearing was quite inappropriate (appropriate) for the weather.
5. It was very impolite (polite) of him to shout at his mother in front of his aunt.
6. It was unreasonable (reasonable) of them to say that.
7. What they said is untrue (true). We didn't hit her at all.