– I’m going to Mary’s birthday party. Bye, mom. --_______, David!
| A．Best wishes | B．Have fun |
| C．Take care | D．No problem |
He had ______ in finding Mr. Green’s house.
| A．many difficulties | B．many difficulty |
| C．much difficulties | D．much difficulty |
——Who telephoned just now?
——Sorry. I couldn’t ______ the voice.
| A．recognize | B．realize | C．know | D．understand |
Only when ______ in 1918, ______ happily back to work.
| A．the war was over … he went | B．was the war over … did he go |
| C．the war was over … did he go | D．was the war over … he went |
The boy would have died, _______ on him without delay.
| A．if the doctor didn’t operate | B．if the doctor wouldn’t operate |
| C．would the doctor not operate | D．had the doctor not operated |
Do you mind ______ how you succeed?
| A．if I go and see | B．if I go seeing | C．my going and see | D．my go to see |