Yesterday my doctor gave me some tablets. There were five in the box. He told me to take one every half hour. How long did they last

单项选择题A．Avenue 4, Street 2.B．Avenue 4, Street 3.C．Avenue 4, Street 4.D．Avenue 4, Street 5.

单项选择题B

单项选择题A

单项选择题_____is Canada's largest city.

单项选择题The famous words“United we stand, divided we fall”were spoken by ___________and the famous speech“I have a dream”was delivered by Martin Luther King.

单项选择题The ancestors of the English are _____.

单项选择题In the twentieth century Britain experienced many wars, of which ________brought the country the largest number of casualties.

单项选择题Geographically speaking, which of the following terms covers the largest area

单项选择题- I' sorry to tell you I failed the physics course, Mom.- . The world won' end if you don' pass an exam.- Thank you for your encouragement.

单项选择题It is recommended that the project until all the preparations have been made.