Every student is required to write an essay on the topic.
A. Every student might write an essay on the topic.
B. Every student must write an essay on the topic.
C. Every student needn’t write an essay on the topic.
D. Every student should write an essay on the topic.
Đáp án B
I think we should have our house painting because it looks too dirty.
The situation is serious. Something must ___________ before it’s too late.
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following question.
Species that have already lost habitat because of deforestation were given higher priority in the plan because of their greater risk of extinction.