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


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. The mother ________ her daughter for 2 hours.?
A. is looking for
B. has been looking for
C. looked for


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


5. ?We should provide useful information for the police no matter there is a ______ or not.?
A. reward
B. present
C. money


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