—Dad, where is Mum?—She ________ dinner in the kitchen now.
一I can’t find my pen.Could you lend me ________ ? —Sorry,I’m using it__________.
The child is crying.Please do something to make him__________.
Thank you for ________to let me _______on the trip.
The trip from Tianjin to Beijing _____ about two hours by coach.
He tries to spend as much time as he can ____ Chinese well. A to study B studies C. studying D. study