Even today, poverty is still a big problem in the United States, ______ more than 10 percent of the whole population.
| A．and that affect | B．affected | C．affecting | D．it affects |
Only by working hard succeed.
| A．can you | B．you can | C．could you | D．you could |
, they went to bed earlier than usual
| A．There was nothing more to do |
| B．They have nothing more to do |
| C．Having nothing more to do |
| D．There having nothing more to do |
They at home when a storm came
| A．sleep | B．slept | C．were sleeping | D．are sleeping |
I wonder that makes him so sad.
| A．why it does | B．what he does | C．how it is | D．what it is |
—Where did you meet her?
—It was in a small town I once worked
| A．that | B．where | C．there | D．which |