1

汤姆

Tāngmǔ

Tom (name)

2

在学

zàixué

to be at school; to be studying

=3

校

jiào

to check; to collate; to proofread

=3

校

xiào

(bound form) school; college (bound form) (military) field officer

=4

吗

má

(coll.) what?

=4

吗

mǎ

used in 吗啡 mǎfēi

=4

吗

ma

(question particle for "yes-no" questions)