The big storm left, ________ a great damage to that area.
A. caused B. to cause D. having been caused D. having caused
__________ the silence for the pauses, we could hear each other’s breathing and could almost bear our own heartbeats. 
| A．In | B．For | C．Under | D．Between |
No one helped me. I did it all _____myself.
| A．for | B．by | C．from | D．to |
—You know, Bob is a little slow_____understanding, so….
—So I have to be patient _____him.
| A．in; with | B．on ; with | C．in; to | D．at; for |
Sorry, Madam. You’d better come tomorrow because it’s __________ the visiting hours.
| A．during | B．at | C．beyond | D．before |
Many people in the west make _____ a rule to buy Christmas presents for their relatives and friends.
| A．this | B．it | C．that | D．them |