—How about coming to see me in the office tomorrow afternoon?
—________，but I have to meet a guest at the airport.
| A．All right | B．Sounds great |
| C．No problem | D．No，I am very sorry |
To our surprise, not a single word _______ in the discussion last Thursday.
| A．had the teacher said | B．said the teacher |
| C．the teacher had said | D．did the teacher say |
——Why are you late for the meeting?
—— I got caught in the heavy rain, or I _______ earlier.
| A．arrived | B．had arrived | C．would arrive | D．would have arrived |
The 3G cell-phone must be of great use to ______ wants to get the information through the Internet quickly.
| A．who | B．whoever | C．whomever | D．whichever |
——How do you like the set of popular science books?
——Wonderful! It _____ many problems we are interested in exploring.
| A．refers | B．consults | C．covers | D．writes |
Was it in the train “ Harmony”, ______ is China’s first high-speed one, that John met with his foreign friend？
| A．which | B．that | C．what | D．where |