as a whole

have difficulty doing

think out

persist in

as best A can

in theory

clear up

break through

answer for

grow out of

as good as

to be exact

keep abreast of

in appearance

as is often the case with

the other way around

like so many

as many

let down

take a step

as of

in full

have difficulty doing

set in

on the face of it

correspond to

prove to be

as often as not

think over

have control over

as regards

as best A can

apologize to A for B

earn one's living

as such

congratulate A on B

see little of

be appropriate to

as the saying goes

as A as any