1.alibek is 2.he is living 3.london is the capital 4.buckingham a) great britain b)is in london c)london d)ben's family

1 - d
2 - c
3 - a
4 - b

Alibek is in London.(c)
He is living with Ben's family(d)
London is the capital of Great Britian(a)
Buckingham Palace is in London (b)