1. — There are so many strange phone calls nowadays. I'm fed up with those calls.
— Speaking of strange phone calls, ________________ .
A. you'd better be careful of the telecommunication frauds.
B. there may be some information you can get from them.
C. who are they?


2. — Our trademark has been infringed by our competitor. What can we do?
— ______________ .
A. I don't know.
B. You can ask someone else.
C. You can file an action in the district court.


3. A car accident may happen when you ________ a parking space.
A. are looking for
B. looked for
C. look for


4. ?Keep an eye for your belongings in the bus station _______ they might be stolen by thieves.?
A. so that
B. in case
C. thus


5. The police officer is determining who is going to be responsible ______ the traffic accident.?
A. for
B. in
C. on


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