1.He _____ for our company since last year а. is working b. has worked c. has been working 2.The engineers won't start working until all the defects _______ a. are eliminated b. aren't eliminated c. will be eliminated 3...

1.He _____ for our company since last year а. is working b. has worked c. has been working 2.The engineers won't start working until all the defects _______ a. are eliminated b. aren't eliminated c. will be eliminated 3. Mrs. Wilson took her _____ to a toy shop. a. five-year-old son b. five-years-old son c. five-year-son 4. New modern residential projects _____ in the cties/ a. appear b. appears c.has appeared 5. Much attention ____ to the planting of greenery. a. is paid b. pays c. has paid