Read and choose the correct missing word (Con hãy đọc và chọn từ còn t

Read and choose the correct missing word
(Con hãy đọc và chọn từ còn thiếu đúng)

Dolphins are part of the whale family. They are smaller (21).......... most whales and they have small teeth. Dolphins are very clever animals. They learn things very (22).......... and a dolphin can make noises to "talk" to another dolphin. Dolphins live (23).......... their families. They like to play in the water and to jump out the water and back in again. A lot of people (24).......... sail boat say that dolphins like to near people. They come very near to boats and sometime they (25).......... with the boats for days.

• A.

  A. then

• B.

  B. than

• C.

  C. that