【单选题】
20. Only when he had handed in his exam paper ____ he had made several mistakes.
①
he has realized
②
does he realize
③
has he realized
④
did he realize
【单选题】
He looked at the little girl, _________ where he had seen her before.
①
wondering
②
wondered
【单选题】
He was _____ his late twenties when he found his first job.
①
in
②
after
③
after
④
from
【单选题】
We were all surprised when he made it clear that he _____________office soon.
①
leaves
②
would leave
③
left
④
had left
【单选题】
When he came to,he found himself________on a chair,with his hands________back.
①
to sit;tying
②
sitting;tying
③
seating;tied
④
seated;tied
【单选题】
He was a good swimmer so he ___ swim to the river bank when the boat sank.
①
could
②
might
③
should
④
was able to