[单项选择]The mother didn’’t know who______ for the broken glass.
A. blamed
B. be blamed
C. to blame
D. would blame

[单项选择]The mother didn’t know who （） for the broken glass.
A. blamed
B. be blamed
C. to blame
D. would blame

[单项选择]Most people didn’t knowMost people didn’t know
A. how to use hot-drinks machines.
B. whether they were drinking tea or coffee.
C. how awful the hot drinks were.

[单项选择]If you didn’t know any better, you might mistake the Newark Earthworks in southern Ohio for the product of some giant heaven spirit who went crazy with an Etch A Sketch. The Earthworks are actually a series of huge geometric mounds that anthropologists believe were created two millennia ago by ancestors of Native Americans called the Hopewell people. The most significant feature still standing is known as the Octagon (八角广场), which has 550-foot-long earthen walls and a footprint big enough to hold four Roman Colosseums (古罗马的圆形大剧院). The structure is connected, via two parallel embankments, to a perfect, 20-acre circle. Together the two shapes form a sophisticated astronomical observatory—scientists have discovered that the structure is precisely aligned with the 18.6-year lunar cycle’s northernmost moonrise. The residents of Newark will tell you that it is also precisely aligned with the ninth fairway at the private Moundbuilders Country Club.
The Earthworks are a National Historic
A. the product of some giant celestial spirit who went crazy with an Etch A Sketch
B. a series of huge geometric mounds that the Hopewell people created two millennia ago
C. the Octagon and a perfect 20-acre circle which it is connected to
D. the structure that is precisely aligned with the 18.6-year lunar cycle’s northernmost moonrise

[单项选择]（　）you didn’t know the rules won’t be a sufficient excuse for your failure to report.
A. What
B. How
C. Because
D. That

[单项选择]Passage One
A. The doctors didn’t know hearts could take surgery.
B. The doctors didn’t have the right cutting tools for the surgery.
C. The doctors didn’t know what was happening in the patient’s chest.
D. The doctors were so afraid that they dare not take the chance.

[单项选择]I didn’t know your mobile phone number; otherwise I （） you the moment I got to Washington.
A. had rung
B. would ring
C. have rung
D. would have rung

[单项选择]He didn’t know （　） or go home.
A. if to wait
B. to wait
C. whether to wait
D. either to wait

[填空题]The teacher didn’t know why her students were discussing（）(noise).

[简答题]We didn’t know his telephone number; otherwise we would have telephoned him.

[单项选择]I didn’t know Jennie’s telephone number; otherwise I （）her.
A. had telephoned
B. would have telephoned
C. telephoned
D. would telephone

[单项选择]We were shocked to find that Mary didn’t know her guest’s name.
A. frustrated
B. disturbed
C. relieved
D. surprised

[单项选择]You didn’t know what the teacher said in the classroom You ______ asleep.
A. must be
B. must have been
C. should be
D. should have been

[单项选择]A. She didn’t know they were wanted.
B. It wasn’t part of her job to do it.
C. She didn’t know which notes to send.