The maker of the popular game Angry Birds announced on Tuesday that it would open its first overseas operation in Shanghai, _____ a clear step to further enter the booming Chinese market.
| A．to mark | B．marking | C．marked | D．having marked |
The letters for the boss________on his desk but he didn’t read them until three days later. (2012·天津，2)
| A．were put | B．was put |
| C．put | D．has put |
I felt very tired when I got home，and I ________ straight to bed. (2013·重庆，21)
| A．go | B．went |
| C．had gone | D．have gone |
The girl has a great interest in sport and ________ badminton classes twice a week over the last three years. (2013·福建，26)
| A．took | B．is taking |
| C．takes | D．has been taking |
—Oh no！We’re too late.The train________.
—That’s OK.We’ll catch the next train to London. (2013·山东，27)
| A．was leaving | B．had left |
| C．has left | D．has been leaving |
—I don’t understand why you didn’t go to the lecture yesterday afternoon.
—I’m so sorry.But I________my homework. (2013·湖南，34)
| A．had done | B．was doing |
| C．would do | D．am doing |