In summer milk quickly go bad _____it is put into a fridge.
Xiao Li had an accident yesterday _____ he is in No.1 People’s Hospital now.
—Lily, _____ you _____ your ticket? —Not yet!
—What class are you in? —I’m in ____, ____.
—____ your sister know Tom? —No, she ____.
—Hi, Lucy. Your skirt is very nice. —____