When you do your homework,you should be __________. [ ]

How_______will you stay here?—Just for two days.[ ]

is it from Wuhan to Nanjing? —It’s about l,200 kilometers.[ ]

they are talking to each other!—Yes. They are really happy to see each other.

Do you know ______ this dictionary belongs to? — Let me see. Oh, it’s _______.