_______ has been done to make our school more beautiful.
| A．Many | B．Much | C．A lot of | D．A few |
The bridge is so important to the people here that once ________ it must be carried out without delay.
| A．designs | B．having designed | C．designing | D．designed |
They tried to prevent the damage ________ their cattle.
| A．from protecting | B．protecting | C．protect | D．to protect |
His father disappeared, ________ two children and never _______ from again.
| A．left; being heard | B．leaving; heard | C．left; be heard | D．leaving; to be heard |
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 |