第二期短语课程-day 19

keep up with

in some way

in respect to

in response to

in addition to

in contrast to/with

in preference to

in search of

in favor of

in honor of

in charge of

in the air

in the way

Owing to his illness，Peter couldnt keep up w____ the rest of the class and get badly behind.

He is in charge o___ the school work.