_________ the unwritten rule goes, study is good, but health comes first.
| A．Which | B．That | C．As | D．What |
Coal was formed out of dead forests through a long _____ of chemical changes.
| A．stage | B．access | C．order | D．process |
The reason _____ the president of Czech is widely discussed recently is _______ he was seen “to steal” a pen at a press conference in Chile.
| A．why, because | B．that, that | C．why, that | D．why, why |
The expert warns the Internet users not to ______ their personal information to strangers.
| A．put out | B．carry out | C．take out | D．give out |
---- Helen seems very happy.
----Yes, she appears ______ in the job interview.
| A．to have been accepted | B．to be accepted |
| C．having accepted | D．being accepted |
Either you or one of your students______ to attend the meeting that is due tomorrow.
| A．are | B．is | C．have | D．be |