Diligence is ______ it takes for the post-90's generation to win competitions.
A. what B. where C. which D. when
With a lot of work ______, she weren't allowed to leave her office.
A. do B. done . C. to be done D. to do
______you are always optimistic and self-confident, I can't wait to make friends with you.
A. Though B. Since C. While D. So
——How many of you made it to the top of the mountain in the end?
——______. It was really tough.
A. No one B. Neither C. None D. Nobody
US house prices has risen by 12.4% over the 12 months to the end of July, completely ______his plan to buy another apartment.
A. ruined B. ruining C. to ruin D. ruins
She had to work deep into the night, ______she couldn't have spread the messages to all the relevant people successfully.
A. while B. but C. otherwise D. so
