ert will be held ________ the world-famous musician, who will personally play his favourtie music at it.

The new China was founded in 1949, ______ great changes have taken place

Be quiet. The girl ________ in the room.

Mom, I wonder ________.—Baby, I think you should study harder.

The tourists often complained of being _____ by the local peddlers when they buy some souvenirs.