【单选题】
The letters for the boss __________ on his desk but he didnt read them until three days later.
①
were put
②
was put
③
put
④
has put
【单选题】
15.The book was so interesting that he had read it for three hours ______ he realized it.
①
when
②
until
③
after
④
before
【单选题】
It was not until he arrived in class _____ realized he had forgotten his book.
①
when he
②
that he
③
and he
④
he
【单选题】
He studied hard in his youth, __________ contributed to his great success in later life.
①
that
②
it
③
what
④
which
【单选题】
A few minutes later, Jim heard his name called. He knew it was his turn to be____________ .
①
examine
②
examines
③
examined
④
examining