when did you go to beijing?
when will you finish your homework?
when i was young,i like eating chocolates.
please say hello to your mom when you see her.
we haven't decided when to go home.
who are you talking to?
who is the man in red sweater?
i don't know who she is.
who can answer this question?
he is the guy who i like a lot.
how are you?
how is everything going?
i don't know how to do it.
how many people are there in the classroom?
how do you use chopsticks?
每种15句太多了..一共写了15句,其实都差不多.