单项选择题
A.unless B.until C.if
That book gives a very vivid （） of that city.A.pictureB...
单项选择题That book gives a very vivid （） of that city.
A.picture B.photo C.view
The police knew the （） of the accident.A.causeB.reasonC...
单项选择题The police knew the （） of the accident.
A.cause B.reason C.result
The pilot turned engine （） and is ready to take off.A.u...
单项选择题The pilot turned engine （） and is ready to take off.
A.up B.off C.on
