Một nhà máy sản xuất khẩu trang lập kế hoạch sản xuất trong 6 tháng đầu năm 2021. Nhà máy đó dự định trung bình mỗi tháng sản xuất được 9870 chiếc khẩu trang. Khi đi vào hoạt động, 4 tháng đầu năm nhà máy sản xuất được 40 220 chiếc khẩu trang. Hỏi nhà máy cần sản xuất bao nhiêu chiếc khẩu trang nữa thì đạt kế hoạch đề ra?

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II.Choose the correct answer. 1.You can avoid some diseases by ​​yourself clean. A.keeping​B.taking​C.looking​D.bringing 2.The Japanese eat a lot of fish instead of meat​​they stay more healthy. A.but​B.because​C.although​D.so 3.Rob eats a lot of fast food and he​​on a lot of weight. A.takes​B.puts​C.spends​D.brings 4.We need to spend less time​​computer games. A.play​B.to play​C.playing​D.to playing 5.Do more exercise​​eat more fruit and vegetables. A.but​B.or​C.and​D.so 6.After working on computers for long hours, you should​​your eyes and relax. A.sleep​B.sleep in​C.wake​D.rest 7.Watching too much television is not good​​you or your eyes. A.with​B.to​C.at​D.for 8.When you have flu, you may have a cough and a​​nose. A.runny​B.running​C.flowing​D.noisy 9.When you have a temperature, you should drink more water and rest​​. A.most​B.more​C.most​​D.less 10.I forgot to wear a sun hat today and I got a​​. A.stomachache​B.earache​C.backache​D.headache 11.We should play sports or do exercise in order to stay in​​. A.look​B.shape​C.fit​D.health 12.Don’t eat that type of fish: you may have a/an​​. A.sick​B.sore​C.energy​D. allergy 13.Do you believe that eating​​carrots helps you see at night? A.much more ​B.less​C.most​D.the most 14.We should try to keep everything around US clean and then flu will find it​​to spread. A.difficult​B.difficulty​C.difficultly​D.difficulties 15.Be careful with​​you eat and drink. A.what​B.that​C.who​D.this 16.Eating a lot of junk food may lead to your ​​. A.obesity​B.fitness​C.pain​D.stomachache 17.We should follow the advice from doctors and health​​in order to keep fit. A.people​B.workers​C.managers​D.experts 18.Have a healthy​​and you can enjoy your life. A.lives​B.lifestyle​C.lifeline​D.lively 19.The health​​from that diet expert is that you should eat less junk food and count your calories if you are becoming fat. A.tip​B.tips​C.advices​D.ideas 20.The seafood I ate this morning makes me feel​​ all over. A.running​B.well​C.itchy​​D.weak