______ I was talking to my friends,my professor came into the room.A.Once B.As long as C.During D.While

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• ______ I was talking to my friends,my professor came into the room.
• ______ I was talking to my friends,my professor came into the room.A.Once B.As long as C.During D.While
• -I nocked into a tree when I went to the railway station for my child---I dupposed you ___too fastA drive B are driving Cdrove D were driving是supposed
• if you go into the forests with friends If you go into the forests with friends,stay with them.If you don't ,you may get lost.If you do get lost,this is what you should do.Sit down and stay where you are.Don't try to find your friends.Let them find you.You can help them to find you by staying in one place.There is another way to help your friends or other people to find you.Give them a signal（信号）by shouting or whistling（吹口哨）three times.Stop.Then shout