Under such _______ we should take a new measure at once.

If you want to lose weight, you should not take such food______really necessary.A．as isB．a

If separating effect is not good, which measure should be taken ____.A.working at interval

Under no ______ should we seek temporary economic development at the expense of the enviro

We must take precautious measures to prevent the river______.A．to be pollutedB．from pollut

The measures people should take to deal with the drought include______.A．making new econom

The style. of "Visitors should go up the stairs at once. " is______.A．formalB．consultative