— Show me your permit, please．
—Oh, it's not in my pocket．It
| A．might fall out | B．could fall out |
| C．should have fallen out | D．must have fallen out |
Every year, a great many visitors come to visit the temple ______ the 12th century, ______ has brought a large income.
| A．dating from; which | B．dated from; which |
| C．which dates from; that | D．which dated from; which |
. She makes _______ effort to learn maths and she has made _______ great progress in it.
| A．an ; a | B．/ ; a | C．the ; / | D．an ; / |
.I shall never forget the day _______ Shen Zhou V was launched, _______ has a great effect on my life.
| A．when ; which | B．that ; which |
| C．which ; that | D．when ; that |
When and where to build the new factory _____ yet.
| A．have not decided | B．are not decided |
| C．has not decided | D．is not decided |
I have many friends, ________ some are businessmen.
| A．of whom | B．from which | C．who of | D．of them |