Three-fourths of the surface of the earth＿＿＿sea．

A number of students ____ seen the film. That is，the number of the students who have seen the film____ large.

Every student as well as teachers who ____ to visit the museum_____ asked to be at the school gate on time.

If you don’t put up the sings after school,          .

---How many _______ are there in the basket? --- _______ fourteen.