1. Choose the correct verb form.

(Chọn dạng động từ đúng.)

1. Carl didn't expect winning/to win the wildlife photography competition.

2. Lyn would prefer to use/use solar energy in her home.

3. The students suggested organising/to organise a fundraising event.

4. We enjoyed taking/to take part in the clean-up day.

5. Kevin denied to take/taking his sister's phone.

6. Stan decided install/to install the energy-efficient lights in his house.

7. She dislikes to use/using paper plates and cups.

8. You promised recycling/to recycle more often.

2. Complete the dialogues with the correct form, to-infinitive, bare infinitive or -ing form.

(Hoàn thành các đoạn hội thoại với dạng đúng, dạng to-infinitive, infinitive hoặc -ing.)

1 A: I don't remember ______________ (order) this book about how to protect wildlife. 

B: You didn't. I asked them to send (send) it to you as a gift. 

2 A: I prefer ______________ (use) energy-efficient lights. 

B: Me too l refuse ______________ (use) traditional ones. This way, we save on energy and money. the 

3 A: Would you like ______________ (visit) the animal shelter this Friday? 

B: Yes, that would be nice. 

4 A: I couldn't help ______________ (notice) that Ray has bought a new compost bin. 

B: Yes, he got it last week. 

5 A: Do you have a car yet? 

B: No, I'd rather ______________ (use) public transport. 

6 A: Can you recycle the bottles, Anna? 

B: Sure! I can do it after I finish ______________ (empty) the compost bin.

3. Put the verbs in brackets into the correct form, to-infinitive or -ing.

(Đặt các động từ trong ngoặc ở dạng đúng, to-infinitive hoặc -ing.)

1a. Oh no! I forgot __________________ (turn) my computer off!

1b. Jane will never forget __________________ (organise) the charity event last year.

2a. Before getting in his tent, James stopped __________________ (put out) the campfire.

2b. Tourists need to stop __________________ (drop) litter in the parks and beaches in our area.

3a. Please remember __________________ (bring) your tickets when visiting the exhibition.

3b. I remember __________________ (rescue) baby turtles when I was in Thailand.

4. Fill in each gap with who, which, that or whose.

(Điền vào khoảng trống với các từ who, which, that hoặc whose.)

1. Janet is the girl __________________ brother helped us clean up at the park.

2. George works for a company __________________ makes compost bins.

3. This is Mark, __________________ is a member of the local wildlife group. 

4. Tammy knows the man __________________ owns the animal shelter down the street.

5. Can you give me the book about how to use solar energy __________________ is on the top shelf?

5. Fill in each gap with who, which, that or whose. Which clauses are defining (D)? Which are non-defining (ND)? Use commas where necessary.

(Điền vào mỗi khoảng trống với who, which, that hoặc whose. Mệnh đề nào xác định (D)? Không xác định (ND) là gì? Sử dụng dấu phẩy nếu cần thiết.)

1. The woman __________________ lives next door works at the recycling centre. 

2. The girl __________________ I met at basketball practice always uses public transport. 

3. Colin, __________________ brother is a member of Greenpeace, is a really nice person. 

4. My parents are talking about the news of climate change __________________ was on Channel.

5. My computer, __________________ I bought last month, is second-hand.