—Do you still remember when we went to Nanjing?
—I can't remember now but ________ sometime last summer?
| A．might it be | B．could it be |
| C．could it have been | D．should it have been |
Sheldon could have defeated Howard in the match, but he _______ too careless at the last minute.
| A．is | B．was | C．has been | D．had been |
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 |