Choose the best answer from A, B, C or D.
Trả lời câu hỏi dưới đây:
The harder you try,______
There has been a great increase in retail sales,_____________________ ?
Only one of our gifted students______to participate in the final competition.
_______ has been a topic of continual geological research.
The examination was not very difficult, but it was_____________________ long.
She asked me______I was looking at.
He_______________us but he was short of money at the time.
__________ John Kennedy was elected president, he was the youngest American President ever.
We all agree that she is____________________ student in our class.
Supporters of free-market globalization point out that_____________________ .
It is stated in the passage that____________________ .