A human brain is more complex than a computer.

A. I was early enough but I didn't see her.

B. She was late so I couldn’t see her.

C. I wasn't early enough to see her.

D. I am so late that I can't see her.

A. What did you use to do in your free time as a child?

B. What did you use doing in your free time as a child?

C. What do you used to do in your free time when a child?

D. What were you used to do in your free time as a child?

A. We used to write to each other for three years.

B. We have written to each other for three years.

C. We wrote to each other since three years.

D. We used to write to each other in three years.

A. This flat is not enough big for my family.

B. This flat is not big enough for my family.

C. This flat is not very big for my family.

D. This flat is not rather big for my family.

A. So bad was the traffic yesterday that I arrived at the meeting on time.

B. Because the traffic was bad yesterday, I arrived at the meeting on time.

C. In spite of the traffic was bad yesterday, I arrived at the meeting on time.

D. Despite the bad traffic yesterday, I arrived at the meeting on time.

A. Bob told me he would help me.

B. Bob asked me to help him.

C. Bob said that he would help you.

D. Bob warned me that he would help her.

A. I will never let him borrow my book again.

B. He never returned the book he borrowed me.

C. I lent him my book, but he didn't remember to return it.

D. I asked him for my book which he forgot to return.