B1. U10-U12

A [...] is a good thing.→ Being able to fly is a good [...] to birds. lợi ích

• benefit
• compare
• apartment
• compare

If you are [...] about something, you know it is true.→ I am [...] that zebras have stripes. chắc chắn, tin cậy

• certain
• site
• marry
• collect

A [...] is an opportunity to do something.→ I had a [...] to see the Roman Coliseum last summer. cơ hội, số phận

• chance
• decision
• far
• sail

An [...] is a change made by something else.→ The medicine had a good [...] on the boy. hiệu quả, tác dụng

• effect
• spend
• grass
• separate

If something is [...], it is very important and necessary.→ It is [...] to have oxygen when you scuba dive. thiết yếu, chủ yếu

• essential
• decision
• quality
• forest

If something is [...], it is not close.→ It's [...] going from the east coast to the west coast of America. xa, xa xôi

• far
• trouble
• wake
• shape

To [...] on something is to think about it and pay attention to it.→ My mom always helps me to [...] on my school work. tập trung

• focus
• meal
• collect
• site

The [...] of something is what it does.→ The [...] of a flashlight is to help you see in the dark. hàm số; chức năng

• function
• marry
• alone
• collect

[...] is the green leaves that cover the ground.→ The [...] looked so soft and green. cỏ, bâi cỏ

• grass
• collect
• sail
• separate

To [...] something is to take care of it.→ The police officer will [...] us from any harm. bảo vệ, canh gác

• guard
• professional
• trouble
• compete