_____ all my colleagues, I’d like to show all my sincere thanks to you for your devotion to our research.
| A．In case of | B．In memory of | C．In honor of | D．On behalf of |
You should make it a rule to leave things ______ you can find them again.
| A．when | B．where | C．then | D．which |
Heasked_______ any elephants in the zoo the day before.
| A．if did you see | B．if you had seen | C．whether did you see | D．that you had seen asked |
Kathy _______ a lot of Spanish
by playing with the native boys and girls.
| A．picked up | B．took up | C．made up | D．turned up |
She wanted to go to the disco, _____, her parents told her not to.
| A．instead | B．but | C．however | D．while |
Sandy could do nothing but _____ to his teacher that he was wrong.
| A．admit | B．admitted | C．admitting | D．to admit |