–Do you have some trouble ____ the problem? Do you need some help?
--No, thank you. I can make it myself.
| A．solve | B．solving | C．to solve | D．solved |
My mother often tells me ______ the teachers carefully
| A．listen | B．listen to |
| C．to listen | D．to listen to |
Look, Jim _______ football on the playground.
| A．plays | B．was playing | C．play | D．is playing |
---Why did you laugh just now?
---Ted wanted to tell us _____ very funny story, but he forgot ______ ending himself.
| A．a , an | B．the , the |
| C．The , a | D．a , the |
It’s too dangerous to cross the road _____
| A．easily | B．carefully |
| C．quietly | D．carelessly |
I have ______ the book for two days.
| A． borrowed | B． keep | C． kept | D． borrow |