1.i .nina,nina's,ninas'.2.the the stadium. isn't,doesn't,can't.3.the the stadium.isn't,doesn't,don't.4.what it,does it,it is.5.my uncle can . play,plays,to play.6.mr smith's be an economist. want,wants,to want.7. football? can you,do you like,you a singer or a dancer? do,are,can.9. want to be a singer or a dancer? do,are,can. dancer.isn't,doesn't,can't.

1) nina's 2)isn't 3)doesn't 4)is it? 5)plays 6)wants 7)where do you like 8)are 9) do 10)isn't

1)nina’s 2)isn’t 3)doesn’t 4)is it 5)play 6)wants 7)can you play , вообще сначала думал do you like,но после глагола like должен быть глагол с окончанием ing , а play стоит в первой форме 8)are 9)do 10)isn’t

Окончание isn't you или don't you, зависит от того в каком   времени стоит предложение. брется глагол этого времени и местоимения из тоего предложения. ес ли предложение отрицательное, то окончание будет положительным, а если предложение утвердительное, то конец отрицательный. по мы в таких предложениях говорим "не правда ли? " или что-то подобное. тоесть don't you это present simple, a aren't you это present continious.#20. 2)you live in bristol, don't you? 3) ted is from wales, isn't he? 4)you're late, aren't you? you start school at nine o'clock every day, don't you? #21 2) you like playing tennis, don't you? -yes, i do.i play every day. 3) you are thirteen years old, aren't you? -yes, i am. 4) you live in the flat, don't you? -no, i don't.i live in a house.  6) you play the violin, don't you? -yes, i do. i play in an orchestra.  7) you start school at nine o'clock, don't you? -no, i don't.i start at eight o'clock.