-----Look! The girl dancing in the gym ____ be Joe. She is the girl who loves dancing too much, you know. ----- No, it ____ be her. Joe has gone to Shanghai.
Look! It is _______so_______!
The film star is very funny. He always makes us__________ in his movies.
Now the weather is becoming ___________ , we should look after ourselves well.
About seventy percent of the earth with water.
Lots of students are_________ in tigers and other wildlife.