38 There is a dog over there Look, out______ Be careful!

Some animals, in order to keep themselves________by the enemies, go out for food at night[ ]

When________there, the postman found the door locked and then stopped ______the letter under it. [ ]

Do you know the West Lake in Hangzhou? – Yes, this is the third time that I ____ this beautiful city

Internet shopping will ready whenpeople make sure that it is safe