If you go by ____ train, you can have quite a comfortable journey, but make sure you get ____ fast one.
| A．the; the | B．不填；a | C．the; a | D．不填；不填 |
________ I can see, there is only one way to solve this problem.
| A．As far as | B．Even if | C．As long as | D．As soon as |
. It is the first time that I _____ abroad.
A. have been B. was B. will have been D. am
— Let’s go to a movie after work, OK?
— ___________. I am free tonight.
| A．Not at all. | B．What of it? | C．Never mind. | D．Why not? |
It was not until he arrived at the office_____ realized he had forgotten the key. 
| A．and he | B．when he | C．that he | D．he |
. You can’t imagine _______ when they received those nice Christmas presents. 
| A．how they were excited | B．how excited they were |
C．how excited were they | D．they were excited |