Choose the best answer.

Tim is afraid of heights. He didn’t climb the mountain with us.

→ If Tim _______ afraid of heights, he _______ the mountain with us.

Choose the best answer.

Many scientists continue to _______ against the use of animals in laboratory experiments.

Choose the best answer.

Local residents have twice _______ against raising property taxes.

Choose the best answer.

The spread of the internet and international trade are key features of _______.

Choose the correct prefix.

Many people today try to live in a(n) _______connected world where technology connects everyone instantly.

Choose the correct prefix.

If we don’t act soon, the planet will become _______ populated, putting pressure on food and water supplies.

Choose the word/phrase that is OPPOSITE in meaning to the underlined part.

Tina decided to stand up to the online bullies who spread lies about her friend.

Choose the best answer.

_______ we urgently need is a global agreement to reduce carbon emissions.