giúp e với ạ e vote 5* cho all 1. Scientists are working for an …………. way to reduce energy consumption. A. effect B. effective C. effection D. effectively 2. They have made a ……… on how to stop the rapid spread of COVID-19. A. suggestive B. suggestively C. suggested D. suggestion 3. We are talking about the preservation of ……………. resources. A. nature B. natural C. naturally D. naturalize 4. Tet is a …………….. festival of the Vietnamese people. A. joy B. joyful C. joyfully D. joyfulness 5. The instructions about how to protect yourselves from being infected by coronavirus must be observed __________. A. strictness B. stricter C. strictly D. strict 6. What will they achieve if they work ___________today. A. hardly B. hard C. harden D. hardness 7. The girl sang very ________. She wanted to send the song to the soldiers and medical staff in the fight against COVID-19. A. beauty B. beautiful C. beautify D. beautifully 8. The “Teaching English on TV” program is very interesting and ________________. A. use B. useful C. useless D. uselessly 9. Don’t be ________. We’ll overcome the pandemic soon. A. impatient B. patient C. patiently D. patience 10. Tom looks very __________. Do you know what happened to him? A. sad B. sadly C. sadness D. sadden 11. My uncle’s old car was___________, but his new one is very ________. A. slow/ fast B. slowly/ fast C. slow/ fastly D. slowly/ fastly 12. The problem of ________ among young people is hard to solve. A. employment B. employee C. employers D . unemployment 13. WHO’s main activities are carrying out research on medical _______ and improving international health care. A. develop B. developing C. development D. develops 14. To Americans, it is not polite to ask someone about age, ________and salary. A. marry B. married C. marriage D. marrying