The train CRH380A, ___ trial operation on the Shanghai-Hangzhou high-speed railway, set a speed record of 416．6 kilometers per hour．
| A．started | B．to start | C．starting | D．being started |
--Li Ping often watches _______ English TV news in her spare time.
---No wonder she has _______ command of English.
| A．/; a | B．an; the | C．the; / | D．an; a |
Our English teacher is wearing a gold watch, ________are made of small diamonds
| A．whose the hands | B．of which hands | C．the hands of which | D．the hands of whom |
__________at the door before you enter the office，or you’ll be considered impolite
| A．Knocking | B．Knocked | C．Knock | D．To knock |
It was March 14th．2013__________Xi Jin ping was elected chairman of the People’s Republic of China
| A．in which | B．that | C．until | D．when |
Camacho，the former Chinese football coach，__________ in China between 2011 and 2013
| A．have worked | B．worked | C．had worked | D．works |