You could hardly imagine ______________ amazing the Great Wall was _______________ you saw it with your own eyes.
| A．how, unless | B．what, unless |
| C．how, if | D．what, until |
I read ___useful book in____ library ____hour ago.
| A．an; a; an | B．the; a; a |
| C．a; the; an | D．a; the; a |
Xi’an is one of ______capital _____in China .
| A．the oldest ; cities | B．older ; city |
| C．the older ; city | D．oldest ; cities |
Reading aloud is the best way English.
| A．to be learn | B．learning |
| C．to learn | D．learns |
I left my keys in the room yesterday. I had to get ______the window.
| A．in | B．through | C．over | D．across |
—How often does the train run to Jinan ? —_____twenty minutes.
| A．Any | B．Each | C．Every | D．Another |