The plane will take off _______ three hours. I must get to the airport right now. [ ]
Mary’s English teacher told her to pay more attention ___ her pronunciation. So she made a ________to practice it every day. [ ]
My aunt left her office after she __________ her work.
Do you know ________ Jenny comes to school every day?一Of course I do.She rides her bike.
It’s 12 April today. Have they found any useful information about the plane’s black box?—Flight MH370? Yes, but it’s difficult to decide where the black box really is.