—Hi, Jack! When did you arrive in Berlin?—Last weekend .I         a different culture since then.

I walked slowly through the market, where people      all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.

Visitors ______ not to touch the exhibits. 

Scientists still wonder whether cloning will help or harm us and where it ____ us.

Mr Smith suggested the problem worth paying attention to ________ at the meeting.