# Unit 5: Challenges

> Từ vựng và mẫu câu Unit 5 (Challenges), Explore New Worlds 11: … helped / started / needed (past simple) / I'm too … to … / I'm … enough to … / give up, keep on, run out of.

Source: https://olyclass.com/library/tb-explore-new-worlds-g11-u05/

- Subject: English
- Level: B1
- Textbook unit: 16
- Play it free on one screen (projector, TV or whiteboard): https://olyclass.com/library?play=tb-explore-new-worlds-g11-u05
- Copy and edit it: https://olyclass.com/library?copy=tb-explore-new-worlds-g11-u05
- Games it plays well in: [Paper Race](https://olyclass.com/classroom-games/paper-race/), [Three in a Row](https://olyclass.com/classroom-games/three-in-a-row/), [Line of Four](https://olyclass.com/classroom-games/line-of-four/), [Prize Climb](https://olyclass.com/classroom-games/prize-climb/)

## Words in this game

- **physical challenge**: Climbing a high mountain is a physical challenge.
- **mental challenge**: Solving a hard puzzle is a mental challenge.
- **improvement**: I can see an improvement in your English.
- **convince**: I tried to convince my friend to join us.
- **protect**: We must protect the animals in our forests.
- **discover**: Scientists discover new animals in the sea.
- **pond**: There are small fish in the pond.
- **homestay**: We stayed in a homestay with a kind family.
- **dinghy**: They sailed a small dinghy across the lake.
- **heron**: A heron stood still in the water.
- **nocturnal**: Owls are nocturnal, so they hunt at night.
- **give up**: Don't give up when the task is difficult.

## Questions

1. The test was hard, but Lan didn't give up. She kept ___ studying. (at / in / on / to)
   Answer: on
2. I'm ___ tired to walk any further. (enough / so many / too / very much)
   Answer: too
3. Tom is strong ___ to climb the mountain. (enough / much / too / very)
   Answer: enough
4. We ran ___ water during the long hike, so we stopped at a shop. (away with / off from / out of / up to)
   Answer: out of