XIII. Make the following sentences negative and interrogative:

1. The new methods of research had been included into my work. 2. The course of treatment has been prolonged. 3. The structure of the pancreas will have been described in the new book.

take an ice cream out of my bag and open it.

good evening.

hello!

let me introduce my friend alex.

pleased to meet you.

i haven't seen you for ages.

i didn't recognize you!

i'll see you tomorrow then.

goodbye!

how are you?

fine,thanks.

excuse me,is anybody sitting here?

i'm afraid this seat is taken.

the tiger is the largest cat species, reaching a total body length of up to 3.3 metres and weighing up to 306 kg. their most recognizable feature is a pattern of dark vertical stripes on reddish-orange fur with lighter underparts. they have exceptionally stout teeth, and their canines are the longest among living felids, with a crown height of up to 74.5 mm.they are territorial and generally solitary but social animals, often requiring large contiguous areas of habitat that support their prey requirements. this, coupled with the fact that they are indigenous to some of the more densely populated places on earth, has caused significant conflicts with humans. in zoos, tigers have live for 20 to 26 years, which also seems to be their longevity in the wild.