It was not until the end of prehistoric times that the first wheeled vehicles appearing.
Đáp án D: appearing -> appeared ( động từ chính của mệnh đề chia ở thì quá khứ đơn)
We all agree that she is____________________ student in our class.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Tom: "___________________ " Mike: "I won't say no!"
In spite of her abilities, Laura has been_____________________ overlooked for promotion.
We must push the piano to the corner of the hall to_____________________ our party tonight.
According to critics of globalization, several developed countries have become rich because of
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
Standing on the tip of the cape,____________________ .
It is stated in the passage that____________________ .
He_______________us but he was short of money at the time.