a.gov.cn, which has _____foodand drug channel with clear explanations, is _____very popular website.

Our country are working even harder now to _______ the gap between the developed countries and ours.

hid himself behind the door, from__________ he could hear the steps of his father clearly

Are you sure the delegation will come to our school next week— _____. The head of it has just emailed me about thedeparture time of their flight.

Have you done all the washing, dear— Not yet. It will take about _______ five minutes.