Luckily I hadn't bought you any birthday presents before you me what you wanted.
a) had told
b) told
c) have told

I’m sure Jane will be very _______ in her new job as she’s very bright.
a) succeed
b) success
c) successful

Harry’s very , so he’ll be able to help you.
a) knowledgeable
b) know
c) knowledge

When I realised what had happened, I ____ called the police.
a) immediately
b) gradually
c) suddenly