Câu hỏi ngữ pháp tiếng Anh

She (a)   three historical novels so far. (write)

The archaeologists _____________ at this site for six months. (dig)

By the time we arrived, the storyteller (a)   his tale. (begin)

The researchers (a)   new evidence about the ancient civilization. (just/find)

He _____________ medieval history since he was a teenager. (study)

I _____________ about the life of Queen Elizabeth I recently. (read)

The explorers _____________ across the desert for weeks before they found water. (travel)

She _____________ rare manuscripts before. (never/collect)

Have you (a)   the Great Wall of China? (ever/visit)

The professor (a)   a lecture on the history of ancient Rome. (just/give)