The secretary worked late into the night, ______ a long speech for the president.
A. to prepareB. prepared C. preparing D. to be prepared
There is no doubt _______ nearsightedness is a serious problem among the youth of our country.
A. / B. which C. whetherD. that
You needn’t have ________ the speaker when he was speaking; there was enough time afterwards for you to ask questions.
A. affectedB. interrupted C. involvedD. disturbed
It’s helpful to put students in a situation _______ they can learn how to cooperate with each other.
A. thatB. when C. which D. where
Lucy is a very optimistic girl. ______ she is faced with difficulties, she always sees the bright side.
A. Every time B. Now that C. As soon as D. On condition that
All the people on the list must be told to attend the meeting; you must make sure that no one is _______.
A. left out B. set as
ide C. cut offD. kept away
