Tina has been working so hard at English that she __________ the English exam.
A study shows that students living in non-smoking dorms are less likely to the habit of smoking.
Much to his surprise,he invited only twenty friends to the dinner,but came.
Faced with trouble or difficulty,a person takes help that is available.
_____ for more than three months, but he did his best to catch up with his classmates.
the world economy is in difficulty, we can see, the people of China are full of hope.