问题补充：
On April 1, Jim tried to play a trick his teacher but the teacher wasn’t taken .
A. by; on
B. in; in
C. on; in
D. on; on
答案：
A. by; on
B. in; in
(答案→)C. on; in
D. on; on
解析：考查介词：句意：在愚人节，吉姆想作弄老师，但是老师没有上当。Play a trick on sb“作弄某人”，take in“欺骗，理解，上当”，选C。
