Do you know the man _____ is sitting behind Nancy ?
| A．what | B．which | C．who | D．whom |
—What the number of the students in your class ?
—About 60 . A number of them girls .
| A．is ; is | B．are ;are |
| C．is ; are | D．are ; is |
Why not ____ your teacher for help when you can't finish _____ the story by yourself?
| A．to ask; write | B．to ask; to write |
| C．ask; writing | D．asking; to write |
—What him last night?
—He had an accident on the way home.
| A．took place to | B．happened to |
| C．took place for | D．happened for |
—Can I help you?
—Thanks. But I think the box is ______ heavy for you ______ carry.
| A．enough; to | B．not enough; to |
| C．too; to | D．too; not to |
Each man will be paid ______ his ability
| A．thanks to | B．because of |
| C．instead of | D．according to |