I invited him to go to the cinema with me and he promised to. He didn’t,______.
| A．too | B．therefore | C．though | D．either |
We were about to go out for a walk ________ it began to rain.
| A．while | B．before | C．as | D．when |
_______ you think graffiti (涂鸦) is mindless vandalism(破坏行为) against property or a living art form, its popularity suggests that it is here to stay.
| A．Although | B．No matter | C．Whether | D．Suppose |
________ a child begins school, he enters a world of vicious competition where success and failure are clearly defined and measured.
| A．Before | B．Until | C．Whenever | D．The moment |
Newton is known as a gifted scientist with very human weaknesses who stood at the point in history _______ magic ended and science began.
| A．that | B．when | C．where | D．which |
Researchers claim to have found the first proof _______ getting a regular eight hours a night really does make you appear healthier and more attractive.
| A．as | B．that | C．how | D．which |
It was for a lifetime of unselfish work among the sick natives ______ the old doctor deserved to be honored.
| A．who | B．that | C．which | D．whom |
To live in honor, he came from a poor family, was his ambition.
| A．though | B．if | C．unless | D．however |
To live in honor, he came from a poor family, was his ambition.
| A．though | B．if | C．unless | D．however |
Last night Mr. Crook didn’t come back at the usual time. ______, he met some friends and atayed out unitl midnght.
| A．Meanwhile | B．However | C．Instead | D．Yet |
He found it increasingly difficult to read, ______ his eyesight was beginning to fail.
A. though B. for C. but D so
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