have to/ has to

Completa estas frases con la forma correcta de have to. .

1. Doctors ............................................ (treat people).
2. Teachers...........................................(be very patient).
3. A secretary .........................................(be organised).
4. Postmen/women............................................(deliver letters).
5. Sportsmen/women..........................(train very hard).


Escribe las frases anteriores en negativo
-
-
-
-
-

Escribe las frases anteriores en interrogativa.
-
-
-
-
-

Escribe estas frases en negativo.

1. He has to work in a bank........................................................................
2. I have to work on Saturdays...................................................................
3. They have to study a lot.........................................................................

Escribe las frases de arriba en forma interrogativa. 

1. ...............................................................in a bank?
2. .............................................................. on Saturdays?
3. ...............................................................a lot?