While crossing the street, __________.
A: the light might be green
B: there are no policemen
C: be careful
D: it is necessary to be careful
A: the light might be green
B: there are no policemen
C: be careful
D: it is necessary to be careful
C
举一反三
- ______be careful when crossing the street! A: Must B: Should C: Ought to D: Do
- Be ______(care)while crossing the roads and remember to look left in Britain. A: careful B: careless C: caring
- Be careful when you ________ the street. A: are crossing B: is crossing C: crossing D: is cross
- Be careful when ______ the road. A: [A] crossing B: to cross C: cross
- You can never be _________ careful when crossing this busy road.
内容
- 0
Where did the policemen catch two pickpockets? （ ） A: at the third crossing B: in the New building C: at dead-end street D: at the grocery store
- 1
______ crossing the street, the old man was knocked down by a car. A: At B: In C: While D: On
- 2
That driver is ______ than this driver. A: careful B: less careful C: least careful D: most careful
- 3
Who is ____ , Tom, Mike or Jack? A: careful B: more careful C: very careful D: the most careful
- 4
The police suspected that the sectary might be ______ of the murder. A: guilty B: conscious C: careful D: impatient