___ by thick bamboo and high forest, the ancient city hadn’t been discovered until the 1990s.
A. Surrounding B. Surround C. Surrounded D. Having surrounded
The saying “ Brother is smoking is not a cigarette(香烟), but loneliness.” is popular on the Internet.
A. That B. What C. Whether D. Which
—Where is the shooting centre?
—It is about 50 kilometres ______ the city of Beijing.
A. in south of B. south of C. the south of D. southern of
Though iPhone 4 is such a hit product, I won’t buy one unless its after service ______.
A. was improved B. gets improved C. is improving D. had got improved
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
—Can you give me some advice on what I said just now?
—Sorry, my mind _____．
A． has wondered B． had wondered C． is wondering D． was wondering
