Cuộn sơ cấp của một máy biển thế có 4400 vòng cuộn thứ cấp có 240 vòng khi đặt vào hai đầu cuộn sơ cấp có một hiệu điện thế xoay chiều 220 v thì ở hai đầu dây cuộn thứ cấp có hiệu điện thế là bao nhiêu

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I. Put the verbs in brackets in Past continuous, Present continuous or Future continuous to complete the sentences. 1. This time tomorrow I (chat)______with my cousin in Sydney on Skype 2. When I (call)______you this morning, my mobile phone was dead 3. We (have)______a video conference at the moment 4. People (not send)_____snail mail any more in 2040 5. They (use)______signs to communicate with each other at this time yesterday 6. My brother (not work)______in the field of communication now 7. "I (not text)______you at 11p.m last Sunday", said Peter 8. Mr.nam (deliver)______a speech at the National University at 10.30 a.m next Wednesday 9. I (get)______a lot of emails from customers these days 10. We (communicate)______by using social media in five days' time II. Choose the best answer for each of the following sentences 1. In a message board you can______messages or post questions A. raise B. arrive C. text D. leave 2. You shrug your shoulders means "______" A. I'm happy B. I don't know C. I'm angry D. Sorry. I need to go now 3. Using music, codes or signs to communicate is called______communication A. verbal B. non'verbal C. public D. non-public 4. I experienced one communcation______in Japan when I didn't understand their body language A. breakdown B. technique C. ability D. device 5. You should try looking for his telephone number on the company______as it may be there A. logo B. email C. website D. forum 6. John managed______his family in England by using Zalo A. contact B. to contact C. contacting D. to contacting 7. They advised______video chatting in the next meeting A. use B. to use C. using D. will use 8. We______to have an Internet connection installed in our house next week A. completed B. suggested C. admitted D. arranged 9. They______about video conferences at this time next Monday A. will talk B. will be talking C. are talking D. are going to talk 10. We______with each other by moblie phone in 2050. A. won't be communicating B. aren't communicating C. haven't communicated D. aren't going to communicate