great surprise,we have made ______profitst as we expected despite the economis crisis throughout the world.

er to keep the balance of ecosystem, everypossible means _______to deal with the problems of the over-exploiting ofnatural resources.

Shall I help clean the kitchen, Mum?—Thank you.But you ________ it because I can do it myself.

He has never learned French． —- __________．

We must prepare ourselves for the worst we are at a loss when meeting with difficulties