Выберите правильный вариант.
1.
When ____ your homework?
a) are you doing b) you do c) you doing d) do you do
2. I cook meals and my sister _____ dishes.
a) is wash b) is washing c) washes d) wash
3. My parents ____ in a very small flat.
a) lives b) live c) living d) is living
4. The earth ____ round the sun.
a) going b) has gone c) goes d) go
5. These people _____ an active part in the construction of new industrial enterprises.
a) took b) is taking c) has taken d) was taking
6. They _____ this problem from different points for two hours yesterday.
a) considered b) were considering c) have considered d) are considering
7. The students of geological institutes ______ in geology.
a) specialize b) have specialized c) is specializing d) were specialized
8. At that time he _____ the material for his graduation paper.
a) collected b) is collecting c) were collecting d) was collecting
9. Since that time it ________ a tradition that the courses are based on the intensive tutorial system.
a) has become b) is becoming c) become d) was becoming
10. She doesn't know who ______ on this important problem at her Institute now.
a) work b) works c) was working d) is working