The process of photosynthesis
1 has been understood (learn/
understand) since the 1800s: sugar
2 (produce/capture) in plants
using water, carbon dioxide and
the sun's energy. Water 3
(pump/take in) by the roots of the
plant. Light energy 4 (capture/
make) by chlorophyll in the plant's
leaves. During this process oxygen
5 — (stay/give off) into the air.
The sugar that 6 (produce/use)
7 - (go/change) into starch (food
substance found in potatoes, flour,
rice, etc.) that 8 (distribute/
store) in the plant.
2. They usually buy tickets beforehand. Now they are buying tickets at the booking-office number 15.
3.What does your father do every day? He is a doctor. He goes to hospital every day.
4. What book were you reading when I came?
5. I have known him for a long time.
6. He has been doing grammar excercises since 10 o`clok and he has already done10 exercises.
7. She is leaving for Kyiv tonight.
8. When wiil she come back)?
9. My parents will visit) the exhibition of modern painters tomorrow.
10. have you seen this exhibition ? - Not yet. I`m am waiting my friend and we will go together.