Two answer are correct.

I haven't seen Mark for such a long time.

A:How many children does he have?

B:How many children do he have?

C:How many children he has gotten?

D:How many Children has he got?

答案：AD

One answer is correct.

When did you last go on holiday?

A: I was gone for three months.

B:I went since three months.

C: I have gone for three months.

D: I went three month ago.

答案：D

One answer is correct.

By the year 2015, I ____ for the company 25 years.

A:Will be working

B:will work

C:had been working

D:will have benn working

答案：D

One answer is correct

The man sitting next to me on the plane was very nervous.

A:He hasn't flown before.

B:He didn't fly before.

C:He hadn't flown before.

D:He wasn't flying before.

答案：C

One answer is correct.

Athens is older than sydney.

A:Sydney isn't older as Athens.

B:Sydney is less older as Athens.

C:Sydney is as yonger as Athens.

D：Sydney is not older than Athens.

答案：B