[填空题]______ (交通非常拥挤); otherwise I would have been here 50 minutes sooner.

[填空题]______(交通非常拥挤) ，otherwise I would have been here 50 minutes Sooner.

[单项选择]Bob（）the bus, otherwise he would have arrived here by now.
A. had missed
B. should have missed
C. might miss
D. must have missed

[单项选择]Mary （） my letter, otherwise she would have replied before now.
A. has received
B. couldn’t have received
C. ought to have received
D. shouldn’t have received

[单项选择]Mary（）my letter, otherwise she would have replied before now.
A. has received
B. couldn’t have received
C. ought to have received
D. shouldn’t have received

[单项选择]

M: Waitress!
W: Yes, sir.
M: I have been here for 10 minutes now.
W: I’m sorry. What can I do for you
M: How much longer are we going to wait for our dinner
W: Sorry, sir. As you know, the duck takes quite a while to prepare. I’ll go to see about your order. Would you like something to drink while you are waiting
M: All right. Two beers, please.

Where does this conversation take place（）
A. In a restaurant.
B. In a shop.
C. At a station.

[填空题]______(他肯定遇到急事了), or he would have been here．

[单项选择]Mary ______ his letter, otherwise she would have replied before now.
A. has received
B. must receive
C. couldn’t have received
D. shouldn’t have received

[填空题]I have been sent here by the American Shipping Company to talk with you about transportation．

[单项选择]Since we have never been here before, we do not know which bus（）
A. should we take
B. to be taking
C. to take
D. should take

[单项选择]A new house will have been built here __________ .
A. in this year
B. for one year
C. by the end of the year
D. during the last year

[填空题]What have Edmond Brothers been
They have been ______.

[单项选择]Children have been said to have braininjured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD). As early as the 1940’s, psychiatrists have (62) children with hyperactivity and extremely distracted and impulsive. These frequent name changes show how (63) researchers are about the causes of the problem and the diagnostic (诊断) (64) for the disorders.
In the past several years, the people who study attention deficit hyperactivity disorder (ADHD) have (65) to clarify the disorder’s causes and (66) , and have reasons to believe that it may be (67) Today’s view on this disorder is very different from the beliefs of just a few years ago.
Researchers are finding that ADHD is not a disorder of just attention, but is from a developmental (68) in the brain’s circuitry and self-control. The loss of self-control (69) other important brain fuctions compulsory for (70) attenti