So far, all of the infected people are thought _______ the flu after direct contact with sick birds.
| A．to have caught | B．having caught | C．to catch | D．being caught |
It is bad for a man to smoke in public places where smoking is not allowed.
| A．method | B．impression | C．behavior | D．attitude |
1. If you go by ______ train, you can have quite a comfortable journey, but make sure you get ______ fast one.
| A．the; the | B．/; a | C．the; a | D．/; / |
----- I must go now, thanks again for your hospitality.
------ _________.
| A．My pleasure! So long! | B．With pleasure! Goodbye! |
| C．You are welcome! Go slowly! | D．Have a nice day! Good luck! |
When questioned, he was too shocked to give a（n）of what had happened when the attack took place．
| A．assessment | B．account | C．survey | D．summary |
---- Mr. Smith is said to have retired and he is living in the country now.
---- Yes. He ________ in our factory for 35 years! What a good worker!
| A．had been working | B．had worked | C．worked | D．have worked |