—Mum, would you please buy me a MP5 player?
—If you can help do the dishes the whole vacation，you have one as a reward•
A．must B．need C．would D．shall
—Can I know your plans for this summer holiday?
—Mm...of course！But I'm just thinking about this.I________be a volunteer social worker.
A．might B．should C．must D．need
Although the climate in our city is good，yet the temperature________fall to 14 centigrade below freezing point in winter.
A．should B．shall C．can D．may
一What does the sign over there read?
一No person ______ smoke or carry a lighted cigarette，cigar or pipe in this area．
A．will B．may C．shall D．must
Some people who don’t like to talk much are not necessarily shy; they _______ just be quiet people.
A．must B．may C．should D．would
—It’s the office! So you_____know eating is not allowed here.
—Oh, sorry.
A．must B．will C．may D．need
