Use
the  Present  Indefinite or 
the   Present  Perfect

1.      
 No wonder 
he   ( To  look) 
tired after  the  strain under 
which  he  (to be) 
lately.

2.      
She
just  (to   ask) 
a porter  to carry her as they (to
be) too heavy for  her.

3.      
Where
(to be) your  monitor? “She
(to  go) to the library.

4.      
I
regularly ( to see) him  every morning at
the tram stop, but  I  (not to see ) him  these two 
or  three days.

5.      
It
(to be)  cold  in winter in Moscow as a rule? – Yes,
generally it (to be),  but  this 
winter  (to be)  exceptionally 
warm. 6.

Why
you (not  to shave) in the morning? –I
(to shave) every   other  day.