问题补充:
He didn’t what I read because his mind was on something else.
A. hold on
B. catch on
C. take in
D. get over
答案:
A. hold on
B. catch on
(答案→)C. take in
D. get over
解析:
take in(=understand)理解;hold on(打电话时)不要挂断;catch on明白(作不及物动词用);get over克服。根据语境应选C项。