Do you know thand always ____beautiful smiles on her face.

Research has been limited to ____ production profits, rather than ____ that GM foods are safe.

20.This is the small house less than 15 square meters,under _____ roof lives a large family of three generations

out right away, _____ you’ll miss the first train.

The man,suspected________having stolen the jewels of the shop,was missing last night,although he was watched over by the police.[ ]