I ______ have been more than six years old when the accident happened.
| A．shouldn’t | B．couldn’t | C．mustn’t | D．needn’t |
The tower ________ now in the distance will be completed in two months．
| A．being built | B．to be built | C．built | D．having been built |
I remember _________ the doors when I left the house, but I forgot _______ you about that so that you didn’t need to worry．
| A．to lock; to tell | B．locking; forgetting |
| C．locking; to tell | D．to lock; telling |
Please excuse me for _____ in without ______．
| A．coming, asking | B．coming, being asked |
| C．to come, asking | D．to come, being asked |
It is said that 30% of the apples here _______ from abroad while 80% of the rice _____ grown here．
| A．is; are | B．are; is | C．are; are | D．is; is |
The murderer was brought in, with his hands ________ behind his back.
| A．being tied | B．having tied | C．to be tied | D．tied |