The April Fools' tradition is said ________ in the sixteenth century.
| A．to start | B．to be starting |
| C．to be started | D．to have started |
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 |
According to statistics, a man is more than twice as likely to die of skin cancer _____a woman.
| A．than | B．such | C．so | D．as |
---What kind of house would you like?
---I’d like____ with a swimming pool at the back of ______.
| A．one; it | B．the one ; one | C．one; one | D．it; it |