Question

____ You know. Mary is a bit slow ___ understanding so...
_____ So I have to be patient _____ him.

A．On; with

B．in; with

C．in;to

D．a(chǎn)t;of

Answer 1

B

考查介詞的用法。be a bit slow in ……,在……方面有點(diǎn)慢；be patient with 表示對(duì)某人有耐心。故選B。