— Are you sure you won’t come for a drink with us?
— _______, if you insist.
A.Not at allB.It depends
C.All right thenD.I don’t care
It's an either-or situation—we can buy a new car this year or we can go on holiday but we can't do _______.
A.othersB.either
C.anotherD.both
Four and _______ half hours of discussion took us up to midnight, and _______ break for cheese, chocolate and tea with sugar.
A.a;aB.the;the
C.不填;theD.a;不填
Only by increasing the number of doctors by 50 percent _______ properly in this hospital.
A.can be the patients treated
B.can the patients be treated
C.the patients can be treated
D.treated can be the patients
A serious study of physics is impossible _______ some knowledge of mathematics.
A.againstB.before
C.beyondD.without
It was only after he had read the papers _______ Mr.Gross realized the task before him was extremely difficult to complete.
A.whenB.thatC.whichD.what