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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