Marking "Earth Day 2009" with his plan for _____ energy．President Barack Obama on Wednesday called for energy exploration.
| A．alternative | B．traditional | C．available | D．inexpensive |
---Hello.May I speak to Lucy?
---_____! Please…I’m afraid she is ____.
| A．Hold on, out | B．Wait, out | C．Hold up; in | D．Hang up, in |
The light is out in her room. She ___ to bed.
| A．can’t go | B．can’t have gone | C．must have gone | D．has gone |
---Excuse me, is this seat taken?---____.Please have a seat.
| A．Yes, it is | B．All right | C．No, it isn’t | D．OF course |
It was in the street __ this little girl saw a great scientist named Einstein for the first time in her life
| A．where | B．on which | C．that | D．who |
A stranger ___ his room without his permission.
| A．broke up | B．broke out | C．broke into | D．broke down |