You are sure to fail the exam__________you study hard.
| A．if | B．unless | C．since | D．that |
—Are you going to Beijing for vacation？
—Yes．want you to________me with some information about it．
| A．offer | B．give | C．show | D．provide |
Our country________the sixth population census(人口普查)already．
| A．finished | B．has finished | C．will finish | D．finishes． |
Nick is never late for work．He always gets to the office________．
A．on time B．in time C．at times
—Why was your class so lively，Mr．Li？
—Oh，my students________in groups about the coming school trip．
| A．discuss | B．are disclassing | C．were discussing | D．have discussed |
—The windows are broken and need to be repaired．
—I think so．They can hardly________the cold now．
| A．keep out | B．give out | C．take out | D．put out |