Как выполнить. Look! The cat
(to stretch) its body. It
(to look) so lovely!

The show
(to begin) at 8 o'clock.

I
(to be) so tired now. I
(to clean) the house before the New Year's party the whole day.

At last! We
(to solve) this maths problem!

Look! The cat is stretching its body. It looks so lovely!

The show begins at 8 o'clock.

I am so tired now. I have been cleaning the house before the New Year's party the whole day.

At last! We have solved this maths problem!