After supper，I often go for a walk ______the river near my house.
| A．on | B．along | C．in | D． with |
Science is really _______ useful sucject although it is very difficult.
| A．an | B．a | C．the | D．/ |
–We can invite our teachers to the party next weekend.
-- Yes. __? I’ll call her at once.
| A．Why not | B．What for | C．why | D．How come |
If you don’t understand it, you can ask the teacher , and it’ll become .
| A．direct; easily | B．directly; easily |
| C．direct; easy | D．directly; easy |
--- Could you tell me ?
---Yes, they to the library.
| A．where are the twins, have been |
| B．where were the twins, have been |
| C．where the twins are, have gone |
| D．where the twin were, have gone |
This is easy job that I can finish it in half hour.
| A．So; an | B．a such; a |
| C．an such; one | D．such an; an |