1. Doing voluntary work helps students gain more life experience.

• boring

• paid

• unpaid

• part-time

We should donate our old clothes to poor people.

• buy

• keep

• throw away

• give

The new TV show has become very popular among teenagers.

• boring

• well-liked

• strange

• simple

Air pollution is becoming a serious problem in big cities.

• cleanliness

• contamination

• decoration

• production

Solar energy is renewable and does not harm the environment.

• traditional

• limited

• sustainable

• dangerous

My father always encourages me to study hard.

• prevents

• hates

• ignores

• supports

Students are trying to raise money for the school charity event.

• spend

• collect

• borrow

• hide

The film was so entertaining that everyone laughed a lot.

• serious

• sad

• enjoyable

• terrible

We should reduce the amount of plastic we use every day.

• increase

• decrease

• reuse

• separate

Scientists are finding ways to preserve rare animals in national parks.

• sell

• capture

• destroy

• protect