II. Điền giới từ 1. They arrived .......... the airport 2 hours ago 2. Nick made notes .................... his diary and checked the word he has done 3. My son has worked ............... the computer since early morning 4. Have you heard the news............... our teacher? 5. What type of equipment is necesssary .............. first-year students III. Cho dạng đúng 1. When the computer breaks down, it needs to be .............. ( repair ) 2. Computer............. is a new field at the university ( program ) 3. A computer can do many kinds of ............... quickly and accurately ( calculate ) 4. He worries about his son's ............... to computer games ( addict) 5. My math .......... explained to me the principles of arithmetic PLS.. HELP ME