— Do you still remember when we went to Chongqing?
—I can’t remember now but ______ sometime last summer?
| A．could it be | B．might it be | C．could it have been | D．might it have been |
Shortly after publication, the book became ____ because of the writer’s repeated use of the negative word "nigger" to refer to the black Americans.
| A．universal | B．conventional | C．controversial | D．skeptical |
Nearly 200 people entered the area ______ to mine diamonds in 2000, and eventually had to be driven off by the police.
| A．irregularly | B．illegally | C．imperfectly | D．unusually |
Hearing the fire alarm, she escaped____ from the office, leaving everything behind, including those important documents.
| A．in public | B．in panic | C．in relief | D．in particular |
Unlike the fossil fuels of today, biofuels are renewable sources, which mean that they will not____ easily.
| A．come out | B．break out | C．turn out | D．run out |
I really don't know how anyonecan _____your constant complaint; no wonder you have lost so many friends.
| A．come up with | B．end up with | C．put up with | D．keep up with |