A. uncommon
Đáp án D
A. uncommon (adj): không phổ biến.
B. uncertain (adj): không chắc chắn, không rõ ràng.
C. unpopular (adj): không phổ biến.
D. unselfish (adj): không vị kỉ, không nghĩ tới lợi ích bản thân.
Dịch: Tình nguyện được coi là hoạt động không nhắm tới mục đích cá nhân và hướng tới tinh thần hào hiệp hoặc cải thiện, nâng cao chất lượng đời sống con người.
I know you are upset about breaking up with Tom, but there are plenty more
The professor’s ____________ theory is that singing preceded speech.
As Roger had resigned, the company decided to take no further ____________against him.
The international conference of the Craniological Association has been ____ in Cairo to discuss the revolutionary discovery of Doctor Gonzales from Mexico.
The small, ______ farms of New England were not appropriate for the Midwest.
Dry salt lakes _________ 70 kilometers long and 15 kilometers wide lie _________ long dunes __________ crests 20 meters high.
I'm sorry you've decided not to go with us on the river trip, but you change your mind, there will still be enough room on the boat for you
She’s very____________ She can be relied on to do her job properly.
Ever since we quarreled in the office, Janice and I have been ____________ enemies.
No sooner ____________ to marry Jack ____________ to have serious doubts.