The boys are playing________the edge of the river.
| A．on |
| B．by |
| C．in |
| D．at |
In order not to be disturbed, I spend three days _______ in my study.
| A．locking | B．locked | C．to lock | D．lock |
He tried to ________ in Japanese.
| A．understand himself | B．make himself understanding |
| C．make himself understood | D．make to understand |
He is said abroad now, but I don’t know in which country he is
| A．to study | B．to be studying |
| C．to have studied | D．studying |
A saying goes practice makes perfect.
| A．which | B．that | C．whether | D．what |
It has been a long established that the Spring Festival is a time for fa
mily reunion in China.
| A．tradition | B．history | C．intelligence | D．system |