Our teacher, Mr. Zhang, has taught English ________ ten years ago.
–Excuse me, where’s the West Hill Farm, please?-Go ______ the forest and ______ the foot of the mountains you will find it.
Which “ai” in the following word has a different pronunciation from the others?
Hangzhou is ______ most beautiful tourist city and I believe I’ll come here for _____ second Time.
He finds hard to finish the work in two days.
—Is Tom at home? —No, he ____ to town.