Cars, buses and bikes ________ stop when the traffic lights turn red.
| A．can | B．may | C．must | D．need |
--- Poor Steve! I could hardly recognize him just now!
--- _______________, He has changed so much.
| A．Never mind |
| B．No problem |
| C．Not at all |
| D．Me neither |
It was with the help of the local guide the mountain climber was rescued.
| A．who |
| B．that |
| C．when |
| D．how |
It was not until near the end of the lettershe mentioned her own plan.
| A．that |
| B．where |
| C．why |
| D．when |
It is by no means clear ______ the president can do to end the strike．（2012．全国新课标Ⅱ）
| A．how |
| B．which |
| C．that |
| D．what |
It remains to be seen ______ the newly formed committee’s policy can be put into practice. (2013 .陕西)
| A．that |
| B．which |
| C．what |
| D．whether |