Seldom _________ any mistakes during my past five years of teaching in this university.
| A．would I make | B．I did make |
| C．should I make | D．did I make |
Don’t call me up at this time tomorrow, for I _______ an important test.
| A．will take | B．am taking |
| C．have been taking | D．will be taking |
It’s the third time that Li Ming has been to Xi’an , _______?
| A．isn’t he | B．hasn’t he | C．isn’t it | D．hasn’t it |
--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 |