1. Choose the correct answer A, B, C, or D to indicate the sentence that best combines each pair of sentences.

(Chọn câu trả lời đúng A, B, C hoặc D để chỉ ra câu kết hợp tốt nhất mỗi cặp câu.)

1. Plants and animals can only live in habitats. These habitats meet their needs.

A. Plants and animals can only live in habitats which meet their needs.

B. Plants and animals can only live in habitats who meet their needs.

C. Plants and animals can only live in habitats what meet their needs.

D. Plants and animals can only live in habitats where meet their needs.

2. We are working on a project about Earth. The features of Earth are so appealing.

A. We are working on a project about Earth, who features are so appealing.

B. We are working on a project about Earth, which features are so appealing.

C. We are working on a project about Earth, what features are so appealing.

D. We are working on a project about Earth, whose features are so appealing.

3. A wetland is mostly covered with water. This is necessary for plants here.

A. A wetland is mostly covered with water, what is necessary for plants here.

B. A wetland is mostly covered with water, when is necessary for plants here.

C. A wetland is mostly covered with water, which is necessary for plants here.

D. A wetland is mostly covered with water, where is necessary for plants here.

4. We learnt about the vital role of clean water on Earth. The surface of Earth is mostly covered by water.

A. We learnt about the vital role of clean water on Earth, which surface is mostly covered by water.

B. We learnt about the vital role of clean water on Earth, whose surface is mostly covered by water.

C. We learnt about the vital role of clean water on Earth, who surface is mostly covered by water.

D. We learnt about the vital role of clean water on Earth, what surface is mostly covered by water.

5. Earth moves round the Sun. The Sun gives light and heat to Earth.

A. Earth moves round the Sun, that gives light and heat to Earth.

B. Earth moves round the Sun, which gives light and heat to Earth.

C. Earth moves round the Sun, what gives light and heat to Earth.

D. Earth moves round the Sun, whose gives light and heat to Earth.

2. Complete the sentences by adding appropriate relative clauses.

(Hoàn thành câu bằng cách thêm mệnh đề quan hệ thích hợp.)

1. Sunlight, _____, is a nonliving part of the environment on Earth.

2. Earth’s water, _____, can move from one place to another.

3. Many living things depend much on soil, _____.

4. Animals and plants are living parts of an ecosystem, _____.

5. Pluto, _____, was considered a planet in the past.

3. Base on the reading in 3 and the notes in 3b, summarise the passage in about 100-120 words. You can start as follows:

(Dựa vào bài đọc ở phần 3 và các ghi chú ở phần 3b, tóm tắt đoạn văn trong khoảng 100-120 từ. Bạn có thể bắt đầu như sau:)

There are three main types of forests, including _____________________________________

(Có ba loại rừng chính, bao gồm _____________________)