LÀM VÀ GIẢI CHI TIẾT 26. This factory produced ____________ motorbikes in 2008 as in the year 2006. a. twice as many b. as twice as many c. as twice many d. as many as twice 27. In many big cities, people have to _____________ up with noise, overcrowding and bad air. a. keep b. catch c. face d. put 28. Had she worked harder last summer, she __________________ a. wouldn't have been sacked b. wouldn't have sacked c. wouldn't sack d. wouldn't be sacked 29. Listening is the most difficult language _____________ for me to master. a. one b. way c. skill d. job 30. In the modern world, women's _______________ roles have been changing. a. natured b. naturally c. nature d. natural