21. Now I... industry cooperates with the natural environment.a) shall be

21. Now I... industry cooperates with the natural environment.

a) shall be illustrating

b) would be illustrating

c) will have illustrated

22. We for you!

a) will be waiting

b) are waiting

c) have been waiting
30. When you come to see me tomorrow I in the garden.

a) would be working

b) shall be working

c) will have been working
36. Hotels are becoming... nowadays.

a) more expensive

b) the most expensive

c) expensiver
49. A: Have you finished that puzzle already? B: Yes, it was really .

a) easy

b) easily

c) the easiest
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