35. In the face of danger, we need to stay ____. Only in this way can we come up with good solutions.

A. still 　　　 B. quiet　 　　　 C. calm　 　　　 D. silent

34. Yesterday we went to visit the farm ____ my father used to work for nearly ten years.

A. in which 　　　 　　B. that　 　 C. where 　　　 D. which

33. Every minute must be made full use of ____ our lessons, for the final examination is coming.

A. going over　　 　　　　　　　　　 B. to go over

C. go over　　　 　　　　　　　　　 D. to going over