1. Nobody can deny the benefits of the Internet in our life, ______?
A. can't he B. can she C. can they D. can't they
2. ______March 2014, Malaysia Airlines’ flight MH370 went missing over the South China Sea.
A. In B. On C. At D. Since
3. Phuong is very tired. ______, she has to finish her homework before going to bed.
A. Therefore B. However C. Because D. Although