President Obama has two daughters, _____ able to fit in well with their citizens.
| A．both of them are | B．none of them are |
| C．both of whom are | D．neither of who is |
With temperature ______ so rapidly, we could not go with the experiment．
| A．fall | B．falling | C．fallen | D．to fall |
--- Is John in the office?
---I didn’t see ______ there．
| A．anyone | B．someone | C．everyone | D．each one |
Because of ______high demand for Type AB blood，____supplies of it are usually limited．
| A．the；the | B．不填；不填 | C．不填；the | D．a；the |
His parents never approve of_____ he plans to do, which always annoys him．
| A．whatever | B．no matter what | C．no matter when | D．whenever |
According to the school rules，no student _________go out of the school after eleven o’clock at night without the teacher’s permission．
| A．will | B．must | C．may | D．shall |