he is going to canada( ).A,by a plane B,on plane C,in plane

he is going to canada( ).A,by a plane B,on plane C,in plane D,by plane
2,the boy enjoyed （ ）in the zoo.A,herself B,myself C,himself D,themselves
3,---how are you （ ）there?--on,( ).A,go,foot B,going,feet C,go,feet D,going,foot
4,jim is one of （ ）boys in his ciass.A,the taller B,the tallest C,tallest D,the most tall
6,（ ）it often snow in winter in xi’an?A,are B,is C,does D,do