Cambridge B1 Preliminary (PET) — All Questions

After a long discussion, they finally reached an ___.

• a.agreement✓
• b.agree
• c.agreeable
• d.agreeing

The sentence needs a noun after 'an'. Adding -ment to the verb 'agree' forms the noun 'agreement'.

It's ___ to finish all this work in one day.

• a.possible
• b.possibly
• c.impossible✓
• d.possibility

The context ('all this work in one day') needs the negative adjective. The prefix 'im-' before 'possible' gives 'impossible'.

Her ___ made everyone in the room smile.

• a.happy
• b.happiness✓
• c.happily
• d.unhappy

A noun is needed after the possessive 'Her'. The suffix -ness turns the adjective 'happy' into the noun 'happiness'.

Please be ___ with the glasses; they break easily.

• a.care
• b.careless
• c.caring
• d.careful✓

The context (glasses break easily) needs 'careful' (showing attention). 'Careless' means the opposite, without attention.