未知题型 It is recommended that the project _____ until all the preparations have been made.(A) is not started (C) not be started(B) will not be started (D) is not to be started

未知题型 You will want two trees about ten feet apart, from _____ to suspend your tent.(A) there (C) which(B) them (D) where

未知题型 An Olympic Marathon is 26 miles and 385 yards, _____ approximately from Marathon to Athen.(A) distance (C) the distance(B) is the distance (D) the distance is