Don’t leave your work .
| A．done half | B．half done | C．a half done | D．done a have |
---Did you visit the Big Ben in London?
---No, we_________ it, but we spent too much time shopping.
| A．could visit | B．could have visited |
| C．must have visited | D．can have visited |
He was satisfied because his work was_________.
| A．high thought | B．high thought of | C．good thought | D．well thought of |
Don’t take things________ others.
| A．belong to | B．belonged to | C．belonging to | D．that belonging to |
It was reported that many helicopters were sent there _________the missing passengers.
| A．in search of | B．in need of | C．in charge of | D．in time of |
---May I open the window to let in some fresh air?
---__________.
| A．Come on! | B．Take care! | C．Hold on! | D．Go ahead! |