I can't go with you．I _______stay at home until my parents come back．（ ）
A．canB．mayC．mustD．could
In our school every student has to choose a club to join，so about one students have joined the Sports Club.（ ）
A．hundred ofB．hundreds of
C．hundredD．hundreds
I think there's no need to buy such an expensive coat for a kid.I'd like a one.（ ）
A．cheapB．cheaperC．cheapestD．lower
Three fifths of the teachers in our school are .（ ）
A．man teachersB．men teachers
C．woman teachersD．women teacher
—How cold here!
—Yes.The weather in Guangyuan is much colder than in your hometown.（ ）
A．thatB．itC．thisD．those
—Must I finish the job this Friday？
—No，you .You can finish it next Monday.（ ）
A．can'tB．needC．needn'tD．mustn't