***** NOT A TEACHER *****

Hello, Harry.

(1) You are correct: a question like No. 2 is very confusing.

(2) Teachers should not have this kind of question on a test.

(3) As you said, many books prefer the singular.

(a) Many books say that if you are talking about the "WHOLE

AMOUNT," it is better to use the singular.

Examples from Longman English Grammar:

Three weeks is a long time to wait.

Two hundred pounds is a lot to spend.

Forty miles is a long way.

Examples from The Grammar Book:

1,000 miles is a long distance.

2 million dollars is a lot of money.

5 years is a long time to spend on a thesis.

(4)

I do not think that it would be fair to mark your answer as "wrong"

if you chose "is." You could explain to your teacher (very respectfully,

of course) that you were thinking of "two days" as a unit:

An amount (singular) of 2 days IS enough to finish this task.

(5) Some teachers feel that "two days are" is only correct if you are

thinking of the "two days" as individual days -- not as a unit. Maybe

something like :

Those two days were completely different from each other.

(6) Please let us know what answer your teacher said was "correct."

***** Thank you *****[/QUOT

Thanks for all of you！
TheParser teacher：
In this test paper， the standard answers given are: 1 will it 2 is 3， 2. But I can't undersand why,so I ask you for help! and now I still can't undersand why！
Thank you again!