a few
a kind of
a little
a lot of
(to) act as
(to) add to
(to) add up
after all
(to) agree to
all right
(to) allow sb to do sth
(to) answer for
(to) argue with
(to) arrive at
as... as
as for
as if
as many as
as soon as
at all
at large
at the age of
at the beginning of
at the end of
at the front of
at the moment
at the same time
at work
be able to
be afraid of
be angry with sb.
be...away from
be busy doing
be careful
be close to
be deep in sth.
be different from
be fond of
be full fo
be going to
be good at
be in danger
be interested in
be known... as
be known for
be late for
be mad at
be made of
be made with
be nice to
be opposite to
be pleased with
be / get ready for
be suitable for
be sure of
be surprised at
be up to
be used for
because of
(to) belong to
between... and
(to) build up
but for
by far
by half
by oneself
by the time
by then
cant help doing
(to) catch a cold
(to) catch up with
(to) cheer up
……