— Our boss says the company is at _________ crossroads.
— Yes, it is challenging and demanding, but we shouldn’t lose _________ confidence.
| A．the; / | B．the; the | C．a; a | D．/; the |
Someone ________ his car in front of my house and it's blocking my way.
| A．was parking | B．parked |
| C．has parked | D．had parked |
________ 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 |