Did she use________the hill near her house？
| A．to climb |
| B．climbing |
| C．to climbing |
| D．climb |
I'm going for a field trip but I haven't decided_________.
| A．what to do | B．to do what |
| C．where to go | D．to go where |
－Must I go and get some water now?－No, you __________.
| A．needn't | B．may not | C．mustn't | D．don't |
The film _________ for twenty minutes when I got to the cinema.
| A．has begun | B．had begun |
| C．has been on | D．had been on |
Look! The boy isn’t working soas that girl.
| A．hard | B．harder | C．hardest | D．hardly |
The Yellow River is the second _____________river in our country.
| A．long | B．longer | C．longest | D．the longest |