Giải thích những đáp án trong các câu dưới đây

Hãy giải thích cho mình tại sao có những đáp án màu đỏ cuối câu ạ
----- Nội dung dịch tự động từ ảnh -----
effectively. communicate
between people.
6. Candidates must be able to
7. Speech is the fastest method of
communication
8. All channels of
9. Doctors do not always have good skills. communication
10. We are in regular
11. Obviously teachers have to be good
12. The president was an effective
need to be kept open. communication
by email. communication
communicators.
communicator.
Comfortable (a) → comfortably (adv) → comfort (v-n)
1. These tennis shoes are designed for
2. The hotel offers a high standard of
3. They had enough money to live in
4. These new shoes are not very .
5. Let me slip into something more
6. She shifted into a more
7. Please make yourself
and performance. comfort
and service. comfort
in their old age. comfort
comfortable.
comfortable
position on the chair. comfortable
while I get some coffee. comfortable
furnished. comfortably
then I'll begin. comfortably
on your allowance. comfortably
8. All the rooms were
9. If you're all sitting
10. You should be able to live