Each of the following sentences has an error. Find the errors and correct them.

It was not until the end of prehistoric times that the first wheeled vehicles appearing.

 I’ve known him _______I left school 

Choose the best answer for each following sentences: 

Mai wishes she (be) ______________ a good singer now.

Choose the best answer to each question. 

 “Who was the man with you yesterday?” – “He was _______.”

 _______ the meat was cooked, I took it out of the oven.

Choose the correct answer to complete the sentence. "This tour ____ you to the outskirts of Hue."

Choose the best answer

On arrival at home I (find) _________that she just (leave) _________just a few minutes before.

__________ water resulted in the death of many aquatic animals.

Choose the best answer to each question. 

You’d better take his proposal _______ before _______ your final decision.

Choose the best answer.

All the best theatres and restaurants are ___________ within a few minutes' walk of each other.

We are leaving Hue for Ho Chi Minh city ______ 4 o’clock this afternoon.

Choose the best answer: 
The school was closed for months because of a serious ________ of SARS-CoV-2.

_______more help, I would call my neighbor

 I’ll write in Spanish _________ understand English.

 I'll return Bob's pen to him the next time I.............him

Choose the word or the phrase or sentence that best completes each unfinished sentence below or that best keeps the meaning of the original sentence if it is substituted for the underlined word or phrase.
I’ll be in trouble if I _________my passport.

 If it __________convenient, let’s go out for a drink tonight.

Choose the correct answer from the four options marked A, B, C, or D to complete sentence: "They went on playing _______ it started to rain."

Choose the best answer.

Thanks to television, people can get the latest ________around the world quickly.  (INFORM)

If he __________ hard today, can he have a holiday tomorrow?

Maria is studying laws, _________?