Did you see the sign "No Swimming"?You ______swim in this river.( )
A.needn'tB.mustn't
C.don't have to
A year has four seasons and it______twelve months.( )
A.divided intoB.is dividing into
C.was divided intoD.is divided into
I heard your father had gone to Beijing on business.
Yes,And he_____in three weeks.( )
A.will returnB.has returned
C.returnedD.returns
I shouted to you at the gate,but you didn't hear me.
Really?I____a telephone call to my mother.( )
A.makeB.was makingC.madeD.have made
We will fail the exam____we study hard.
That's why we are trying our best to prepare for the exam.( )
A.untilB.whenC.unlessD.how
How time flies!We should show love for our parents and make them ______how much they mean to us.( )
A.to knowB.knowingC.knewD.know