4. i ____ on this project for days without success.\n a. have been worked\n b. had being worked\n c. have…

4. i ____ on this project for days without success.\n a. have been worked\n b. had being worked\n c. have been working\n5. she ___ extremely quiet since her husband died.\n a. is\n b. has been\n c. was\n6. next month we ____ our 5th wedding anniversary.\n a. will be celebrating\n b. will have been celebrating\n c. will be celebrated\n7. if you ____ it, give it a go.\n a. didnt try\n b. havent tried\n c. hadnt tried\n8. i wish i ____ a millionaire so i could travel all over the world.\n a. was\n b. had been\n c. were\n9. he ____ to class this morning because he was sick.\n a. didnt come\n b. hadnt come\n c. hasnt come\n10. while the reporter ____ the policeman, the robber escaped.\n a. interviewing\n b. was interviewing\n c. had been interviewing\n11. ____ a ufo?\n a. did you ever see\n b. do you ever see\n c. have you ever seen

4. i ____ on this project for days without success.\n a. have been worked\n b. had being worked\n c. have been working\n5. she ___ extremely quiet since her husband died.\n a. is\n b. has been\n c. was\n6. next month we ____ our 5th wedding anniversary.\n a. will be celebrating\n b. will have been celebrating\n c. will be celebrated\n7. if you ____ it, give it a go.\n a. didnt try\n b. havent tried\n c. hadnt tried\n8. i wish i ____ a millionaire so i could travel all over the world.\n a. was\n b. had been\n c. were\n9. he ____ to class this morning because he was sick.\n a. didnt come\n b. hadnt come\n c. hasnt come\n10. while the reporter ____ the policeman, the robber escaped.\n a. interviewing\n b. was interviewing\n c. had been interviewing\n11. ____ a ufo?\n a. did you ever see\n b. do you ever see\n c. have you ever seen

Answer

Brief Explanations:

  1. "have been working" is the present perfect continuous tense, used to show an action that started in the past and is still ongoing.
  2. "has been" is used with the present perfect tense to show a state that started in the past and continues to the present (since her husband died).
  3. "will be celebrating" is the future - continuous tense, indicating an action that will be in progress at a certain time in the future (next month).
  4. "haven't tried" is in the present perfect tense, appropriate for a situation where the experience up to now is being referred to before suggesting to "give it a go".
  5. "were" is used in the subjunctive mood after "I wish" to express a non - real or hypothetical situation.
  6. "didn't come" is in the simple past tense, used to describe a completed action in the past (this morning).
  7. "was interviewing" is in the past continuous tense, showing an action that was in progress when another action (the robber escaped) occurred.
  8. "Have you ever seen" is in the present perfect tense, used to ask about an experience from the past up to now regarding seeing a UFO.

Answer:

  1. c. have been working
  2. b. has been
  3. a. will be celebrating
  4. b. haven't tried
  5. c. were
  6. a. didn't come
  7. b. was interviewing
  8. c. Have you ever seen