Используйте походящую по смыслу временную форму: Present Indefinite, Present Continuous, Present Perfect, Past Indefinite.
a)1. I can't speak about this book, as I ... it. (not to read)
2. The sun ... the whole morning today. (to shine)
3. It is Friday today. ... you ... him this week? — Yеs,I......him on Monday. (to see)
4. Every day I ... my watch at nine o'clock in the evening. (to wind up)
5. When ... you... to Petersburg? I ... to Petersburg in 1995. (to come)
6. Ann, what... you ... here? I ... for a friend of mine. (to do, to wait)
7....you ... the dictionary? — Yes, I... it two days ago. (to buy)
8. She ... not ... anything about it yesterday. (to say) 9. What exercise ... you ... ? — I ... exercise No. 3. (to write)
10. This student always ... to speak English with his comrades. (to try)
b)Here in Moscow in the past 12 months nearly half a million people ... into new flats, centrally heated, well equipped and let at fabulously high rents. (to move) Like the Yelkins, for instance, a family of three, who ... a large sum for a two-
roomed flat with a kitchen and bathroom, central heating and constant hot water. (to pay) And they are one among thousands of families.

a) 1. I can't speak about this book, as I ... it. (have not read) 2. The sun ... the whole morning today. (was shining) 3. It is Friday today. Have you seen him this week? — Yеs,I saw him on Monday. 4. Every day I ... my watch at nine o'clock in the evening. 5. When did you come to Petersburg? I came to Petersburg in 1995. 6. Ann, what are you doing here? I am waiting for a friend of mine. 7. Have you bought the dictionary? — Yes, I bought it two days ago. 8. She did not write anything about it yesterday.  9. What exercise are you writing? — I am writing exercise No. 3. 10. This student always ... to speak English with his comrades. ( tries) b) Here in Moscow in the past 12 months nearly half a million people have moved into new flats, centrally heated, well equipped and let at fabulously high rents. Like the Yelkins, for instance, a family of three, who have paid a large sum for a two- roomed flat with a kitchen and bathroom, central heating and constant hot water. And they are one among thousands of families.