Watch out! fall 1.are going to 2.will 3.is going to 4.are

1)tony has been writing the letter for an hour.

2/they have been cycling for a long time.

-he works in a hospital.   -he is a doctor.

she works at school.   -she is a teacher

-they fly planes.   -they are  pilots

-we are at school.   -we are  students

-i fly rockets. i am a cosmonaut