1) to cover 5) the field
2) to deal with 2) the cells
3) to come from 8) a theory
4) to search for 1) clues
5) to examine 7) the word
6) to investigate 3) the problem
7) to develop 10) the basis
8) to divide into 9) groups
9) to provide 6) facts
10) to shape 11) the views
11) to invent 4) tools
1. in of
2. at with on
3. in in
4. with
5. at with
A: Where 1)were you at 5 o'clock yesterday?
B: I was watching a theatre performance.
A: When did you see Aidar?
B: While I 4) was waiting for the bus.
A: What 5)did Nurislam do earlier?
B: He 6) bought the theatre tickets and then he 7)was going shopping.
A: 8)You were going to the concert when i (10) got a flat tyre.
1. Our grandad is a vet. Our grandmother is a teacher.
2. Their mum is a nurse. Their dad is a mechanic. Their aunt is a shop-assistant. Their uncle is a businessman.