I need your help because I don’t know __________.
| A．how to do | B．what to do it | C．what should I do | D．how to do it |
—What happened________him？
—He had an accident．
| A．with | B．to | C．of | D．about |
—What did you see？
—I saw some boys________on the playground when I walked past．
| A．sat | B．sitting | C．to sit | D．to sitting |
—________？
—She has a sore back．
| A．What is she |
| B．What does she look like |
| C．What’s the matter with her |
| D．What does she do |
They study so________that they easily pass the exam．
| A．hard |
| B．harder |
| C．hardly |
| D．hardest |
She realized________English well．
| A．the importance of learn |
| B．the important of learn |
| C．the importance of learning |
| D．the important of learning |