______everybody enjoys fresh cut flowers around his house．few people know how to keep them for as long as possible．
| A．Because | B．Since | C．While | D．If |
The spokesman was seated in front of all the journalists at the press conference, _______ to answer all kinds of questions.
| A．prepared | B．preparing |
| C．to be prepared | D．having prepared |
The teacher came in the classroom, book in _____ hand. After that, he put the book in ____place.
| A．the, / | B．the, the | C．his, the | D．/, / |
--Sir, you are fined for speeding. Please sign here.
--Fined? Speeding? ______
| A．Are you all right? | B．You can't be serious! |
| C．I'm a foreigner. | D．It doesn't matter. |
Believe it or not, the video The Little Apple______in China, and the past few months ______its popularity.
| A．was caught on; have seen | B．caught on; has seen |
| C．was caught on; saw | D．has caught on; saw |
The meaning of a word can be guessed according to the context, so you will not necessarily refer to a dictionary the next time ______you come across a new word.
| A．that | B．which | C．when | D．/ |