It was along the Mississippi River ________ Mark Twain spent much of his
childhood.
| A．how | B．which | C．that | D．where |
________ here yesterday，he could have seen Jackie Chan.
| A．If Bob has come | B．If Bob came |
| C．If Bob had come | D．If Bob should come |
Some passersby witnessed the car accident ________ five passengers were killed，a baby included.
| A．in which | B．which |
| C．that | D．in that |
Never believe anything ________ other people have believed it.Use your own head.
| A．that | B．unless |
| C．because | D．once |
Everyone wants to live in a beautiful，comfortable and livable place，but not ________ know where it is.
| A．all | B．some |
| C．either | D．both |
—Do you know if Linda is willing to take charge of the program?
—________，does it?
| A．It takes no time | B．It counts for nothing |
| C．It doesn't hurt to ask | D．It doesn't make sense |