—You should have thanked the hostess before leaving.
—I meant ______. But I couldn’t find her when I was leaving.
| A．to | B．to do | C．doing | D．doing so |
— What is your new friend like?
— ________.
| A．Handsome | B．Practical | C．Brilliant | D．Outgoing |
So difficult ________ it to live in an English-speaking country that I determined to learn English well.
| A．did I feel | B．I did feel | C．have I felt | D．I have felt |
— Why didn’t you come to Mike’s birthday party yesterday?
— Well, I _______, but I had something important to do at the moment.
| A．should | B．must | C．should have | D．must have |
Look at the timetable. The flight to Shanghai _______ off at 10:00.
| A．is taking | B．takes | C．will be taken | D．will take |
_______ many people first go to the Internet for information, it is not always the best place for what you need.
| A．As | B．Since | C．When | D．While |