1.What my teacher said that day was deeply__on my mind.(A)

1.What my teacher said that day was deeply__on my mind.(A)
A.impressed B.impresses C.impressing D.to impress
2.Bob's words sound reasonable but they remain to be__.(D)
A.understood B.permitted C.allowed D.confirmed
3.It still puzzles the world why some mammals produce their young__and hatching while others__to young babies.(B)
A.iying eggs;giving birth B.by laying eggs;by giving birth C.by laying eggs;give birth D.laying eggs;giving birth
4.Nobody in the family knows for sure why__.(C)
A.it broke out fierce quarrels between the newly wedded couple
B.the newly wedded couple often broke out fierce quarrels
C.fierce quarrels often broke out between the newly wedded couple
D.fierce quarrels were often broke out between the newly wedded couple
5.My father seems to have a natural gift__treating frostbites.__,he is able to cure it.(D)
A.at;however serious a frostibite is B.for;whatever serious a frostbite is
C.with;however a frostbite is serous D.fot;however serious a frostbite is
6.Nobody could have ever imagined that the poor man__be a millionaire.(B)
A.in rag;could B.in fags;should C.wearing poorlu;should D.might
7.That we need more practice__quite clear.(A)
A.is B.are C.be D./