6 * Put the verbs in brackets into the correct infinitive or -ing form. ast bers hour 3) Hercule Poirot is one of Agatha Christie's most well- sa th known characters. He's a Belgian detective who loves 1) investigating (investigate) mysteries. He's always busy 2)... (look) for clues and he can (solve) the most difficult crimes. At the end of each book, Poirot uses evidence · (th 4) (reveal) the identity of the the criminal. Poirot's character was so popular in the 1960s and 70s that, when he died in the novel Curtain, the New York Times decided 5) othes (publish) an article about him! Even today, decades after Agatha Christie wrote her last Poirot story, yfing millions of people still enjoy 6) /6 (read) about the clever Belgian detective. polic /

Climate change is a real problem, but its 1) importance has been 2) grossly exaggerated. It's far less important than other social problems such as povetry, infectious diseases 3) deforestation, and 4) extinction of species, not to mention war, nuclear weapons and 5) biological weapons. We don't know whether the observed climate changes are, on balance, good or bad for the health of the biosphere. And the effects atmospheric carbon dioxide as a 6) effects on fertilize (здесь опечатка)  of plant 7) growth are at least as important as its effects climate. So, we agree that more research is needed to improve 8) scientific 9) understanding of global 10) warming.

She goes to school every day.
She doesn't go to school every day
Does she go to school every day ? - no she isn't or yes she is
My mother cooks dinner four times a week
My mother doesn't cook dinner four times a week
Does my mother cook dinner four times a week ? - no she doesn't or yes she does.
I went to the cinema yesterday, I didn't go to the cinema yesterday
Did I go to the cinema yesterday ?- no I didn't or yes I didn't
We played chess five minutes ago, we didn't play chess five minutes ago
Did we play chess five minutes ago?- yes we did one no we didn't
I'll buy some presents for my friends, I won't buy some presents for my friends
Will I buy some presents for my friends ? - no I won't or yes I will
They will go to the dentist, they won't go to the dentist
Will they go to the dentist ?- yes they will or no they won't
He is wearing scarf, he isn't wearing scarf
Is he wearing a scarf ? - yes he is or no he isn't
I'm doing my homework , I'm not doing my homework
Am I doing my homework ?- yes I am or no I am not