I’m going to _____ advantage of this tour to explore the history of the castle.
A. put B. make C. take D. give
（题文）(2016·天津)The manager put forward a suggestion __________ we should have an assistant. There is too much work to do.
A. whether B. that
C. which D. what
（题文）（2016·天津）The weather forecast says it will be cloudy with a slight _____ of rain later tonight.
A. effect B. sense
C. change D. chance
We will put off the picnic in the park until next week, ____ the weather may be better.
A. that B. where
C. which D. when
Mary was silent during the early part of the discussion but finally she ____ her opinion on the subject.
A. gave voice to B. kept an eye on
C. turned a deaf ear of D. set foot on
（2016·天津）_____the average age of the population increases, there are more and more old people to care for.
A. Unless B. Until
C. As D. While
