____ a pen, two pencils and threebooks on the desk

下列各项中，不全含通假字的一项是（ ）

If you want to be healthier, you shouldn’t do _____ inthe classroom all the time but domore _____ on the playground.

He bought whatever caught his eye in the store _______ he often went [ ]

..Modern China is experiencing a completely new period ______ respect for science and creativity has become the guiding principle of the society