单项选择题
The company，（）Mr．Smith was until recently the chairman，has made loss of 3000000 pounds this year．
A.thatB.whichC.of whichD.in which
单项选择题 He looked（）funny that we couldn’t help laughing．
单项选择题 After the bell rings，which indicates the ending of the exam，you（）stay（）you are until all your papers are collected.
单项选择题 The problems （）at the meeting tomorrow are really hard to solve.
