初二英语,急死!

题目

初二英语,急死!
（ ）students like singing the song.
1,number of 2, anumberof 3,the number of
there are many ways of ( )out the problem.
1,work 2,works 3,working
thelight is on in his room.i'm sure 和（ ）back.
1must be 2, is 3, may be
it is ( )cold outside.there's( )sonw
1,much too,too much 2, much too,much too3,too much,much too

答案

答案选2.（A number of ）students like singing the song.答案选3.there are many ways of (working )out the problem介词of后用动词ing形式答案选1.thelight is on in his room.i'm sure he（ must be）back.答案...