________ the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it

The head teacher said ________ broke the rules wouldbe punished.

You did me a huge favor. However, I lack words_________to express my thanks.

re day, _______ I will get everythingready.

Food supplies in the flood-stricken area ______We must act immediately before there’s nothing left