concentrate

[Tornadoo1970]

While we ……………….in London, we went missing.
a. were b. was c. were being d. was being
12. Egypt and Libya are ………………..during times of disasters.
a. neighbourly b. neighbouring c. neighbours d. neighbour
13.A .......... card is a plastic card used to take money directly from your bank account.
a. cash b- credit c- debit d- identity
14. I didn’t realise it was late since I ……………so hard on what I was doing.
a. was concentrating b. had concentrated c. concentrated d.concentrate