They kept trying, and their efforts finally _______.
| A．make it | B．paid off |
| C．are made it | D．are paid off |
An artist who was recently traveling on a ferry to the southern island discovered ________ a long lost antique Greek vase.
| A．at random | B．by chance |
| C．in turn | D．on occasion |
I am always delighted when I receive an email from you.________ the party on July 1st, I shall be pleased to attend.
| A．On account of | B．In response to |
| C．In view of | D．With regard to |
________ his career as an actor he never gave up his hope of becoming a Hollywood star.
| A．Throughout | B．Within |
| C．For | D．In |
Mrs.Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
| A．in the way | B．on watch |
| C．in sight | D．on the line |
It will be a big help if you go to the store and get what we need for dinner.________， I'll set the table.
| A．As a result | B．On the whole |
| C．In the meanwhile | D．As a matter of fact |