31.А 32.В 33.С 34.А 35.В 36.D 37.C 38.A 39.A 40.B
A) Present Simple -3,5,7,9,10,12,13,15,16( what do you do),17,18,19( I don't want to stay),20
B) Present Continuous-1,2,4,6,8,11,14,16( while you are waiting for your flight),19(it's growing cold)
1 I m fine thanks
2 i was ten years<span> been away
</span>3 Yes i am
4 I will cut the hars
5 because i want to say good buy America
6 I m lern English
7 No i m not
8 i m live in Russia