i often dream ＿＿ i can fly a.of b.at c.that 2.they are going to ＿＿.a.dance b.dance...

题目

i often dream ＿＿ i can fly a.of b.at c.that 2.they are going to ＿＿.a.dance b.dance...
i often dream ＿＿ i can fly
a.of b.at c.that
2.they are going to ＿＿.
a.dance b.dances c.dancing
3.what are you doing on sunday we are going to ＿＿ .
a.shopping b.go shopping c.shop ..这几道选择题怎么选,为什么?

答案