18.Every boy and every girl as well as some teachers who _________to visit the museum _______asked to be at school gate before 6:00 in the morning.
---Do you know what WWF______ ? ----Yes. That’s World Wide Fund for Nature.
In developed countries, farm workers _________ only a small section of the population.
Science and technology __________ nowadays in our socialist construction.
_____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
John as well as the other children who _______ no parents _______ good care of in the village.