Complete the sentences below.Write NO MORE THAN THREE WORDS for each answer.

填空题 If you need to find information on a certain book, you can use 1check-out cards.

填空题 If you want to find information in a specific field, use the 1guides.

填空题 Computers in some 1cannot be linked to the network.

填空题 You can find more information in a 1on my desk.