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.

1. no wonder he looks tired after the strain under which he has  been lately2. she has just  asked a porter to carry her as they are too heavy for her. 3 .where is your monitor? - she has gone to the library.4. i regularly see him every morning at the tram stop, but ihave  not seen him these two or three days.5. is it  cold in winter in moscow as a rule? – yes, generally it is , but this winter is exceptionally warm.6.why don't you shave in the morning? – i shave every other day. 

there are a lot of opinions in the world about visiting zoos. zoo and reserve are as an attraction to people. many people like watching different kinds of animals in the zoo. we like looking and observing them. and some people don’t think that   the zoo can be harmful to animals. keeping the animals in the zoo has its benefits to people. we like viewing animals because it entertain us. we can watch animals with our own eyes and not  in television. it is interesting to see how they behave, move and make sounds to communicate to their own animals and to people as well. zoos are often used as places to preserve the endangered species, such as the giant pandas and tigers. thanks to zoos, certain species of animals have been saved from extinction. on the other hand, the zoo is harmful for   animals. when animals stay in the zoo, people are depriving them of freedom.   they don’t   live a normal life in the forests and fields. animals should stay in their normal habitat. we have the responsibilities to protect, nurture and preserving them in our environment. i think that a zoo has some useful purposes to serve: to preserve the endangered species, to educate the public about wildlife, and for its visitors to have fun. so a zoo of course is a useful place for us and we should have them.