someone who asks for money and other things from someone such as a friend or relative and makes no effort to give them anything or to pay for anything themselves
a sponger
study very hard, especially when you are preparing for an examination.
to swot / cram
driving too fast or in a way which is dangerous to other people.
road hog
behaving in a calm relaxed way as if nothing will ever worry them.
be laid-back
a question containing a hidden trap or implication
a loaded question
very thorough and with careful attention to detail
meticulous
working hard and careful to do things well
conscientious
someone who likes to be or work alone
lone wolf
when you are suddenly unable to think of anything appropriate to say, for example in reply to a question.
your mind goes blank
sb who talks a lot
a chatterbox
easy to trick because they trust and believe people too easily
gullible