21 Our teacher _____ this picture on the wall yesterday.

21 Our teacher _____ this picture on the wall yesterday.
A hung B hang C when
22 The Chinese people are busy ____ the Spring Festival now.
A to perpare for Bpreoaring for C to perpare
23 Let's ____this festival.
A celebrates b calebrating C celebrate
24 This pair of shoes_____not mine,my shoes ____under the bed.
A are,are Bare,is Cis,are
25 I enjoy playing computers,but I can't ___much time____it.
A spend on B pay in C take in
26 This is not my pen.It must be______.
A someone else B someone else's C someone else'