You are not allowed to take photographs here.
A. You needn’t take photographs here.
B. You can’t take photographs here.
C. You don’t have to take photographs here.
D. You mustn’t take photographs here.
Đáp án D
I think we should have our house painting because it looks too dirty.
The situation is serious. Something must ___________ before it’s too late.
Species that have already lost habitat because of deforestation were given higher priority in the plan because of their greater risk of extinction.
The Red List has been introduced to raise people’s _______ of conservation needs.