These natural parks are very important for preserving many animals, which would ______ run the risk of becoming extinct(灭绝的)．
| A．otherwise | B．other than | C．therefore | D．in another way |
---- Would you mind if I opened the door?
--- ________.
| A．Yes, go ahead | B．No, go ahead | C．Yes, please | D．Never mind |
The murderer was brought in, with his hands______ behind his back.
| A．being tied | B．having tied | C．to be tied | D．tied |
It is the third time that she has won the race, ______ has surprised us all.
| A．that | B．where | C． which | D． what |
The man________ in the chair asked me to _____________.
| A．seated; seated | B．sitting; sitting | C．seating; seat | D．seated; be seated |
She doesn’t ____ her daughter’s marriage.
| A．approve for | B．agree with | C．receive | D．approve of |