I ______the paper before my lawyer explained the details to me.
| A．signed | B．had signed |
| C．signs | D．has signed |
_____ is known to all, the age _______ children can go to school is seven.
| A．What; which | B．It; when | C．As; at which | D．Which; when |
He told me that he was very familiar _______ the surroundings there and I told him that the
people there were familiar _____ me.
| A．with; to | B．to; with | C．for; on | D．over; at |
. When the teacher came in, the student pretended ________ his lessons.
| A．to do | B．to have done | C．to be doing | D．to be done |
___ the technology developing, the games will become more and more___.
| A．As; amazing | B．Of; amazed |
| C．With; amazing | D．For; amazed |
Mark woke up one morning to find both water and electricity ___ because he had not been able to pay the bills.
| A．cut down | B．cut out | C．cut off | D．cut short |