Find one error in each of the following sentences.
Trả lời câu hỏi dưới đây:
It is vital that the gas line is checked carefully before we ignite.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Standing on the tip of the cape,____________________ .
The examination was not very difficult, but it was_____________________ long.
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
_______ has been a topic of continual geological research.
______ his brother, Mike is active and friendly.
The boat was sailing north when a terrible storm_____________ .
I am sorry I have no time at present to____________________ detail of our plan.
Michael looked deeply hurt and surprised when_____________________ .
The word "allocated" in the passage mostly means "______".