you are...your guard(very careful because you fear there might be danger)	on
you are...the defence(attacked or criticized and you defend yourself)	on
you are...the lookout...sth(watch carefully so that you will notice if it appears)	on for
...place...(as a replacement for)	in of
you pluck...the courage to do sth	up
sth makes...sth(helps to create it)	for
sb is getting...sth(try to say it or suggest it indirectly)	at
you head...a place(go in direction of this place)	for
you run...sb(meet by chance)	into
you can conceive...sth(you can imagine it)	of
you wouldn't dream...doing sth(wouldn't even consider this)	of
you do sth...anticipation...sth else	in of
what you are letting yourself... ...is sth unpleasant that you are getting involved in	in for
you put... ...sth(apply for it)	in for
sb is ejected...a place(removed from it)	from
you content yourself...sth	with
you settle...sth(accept it)	for
you are reduced...sth/doing sth	to
sth is composed...sth(consists of it)	of
one thing is associated...another	with
you suspect sb...sth/...doing sth	of of
you wonder...sth	about
except...sth	for
...hindsight	with
...retrospect	in
you look sb...(visit after not seeing for a long time)	up
you look... ... sth	out for
you look...the place	round
you look...sb/sth...sth	on as