Help explain option 5, help explain a choice

over) the last five years the city has developed into a great industrial city.

ABCD is not right. <> is the part to be changed, and () is the grammar to be emphasized.

To use a, the sentence should read for the last five years the city (has been developing) into a greatest industrial cityEmphasize the grammar in (), emphasizing the time period.

To use b, the sentence should read last five years, the city (had developed) into a greatest industrial cityEmphasis was finished, and it was completed.

cd has nothing to say.,A little bit of English will feel with,From is wrong.。

Let's take a look, whether it is over or for, the answer is obvious.

I hope the landlord is satisfied!

But if you really want to choose, A makes do with A.

Choose C because if you choose A, it does not conform to the grammar, and you should add an adverbial indicating the reason after for.

Choosing B doesn't work either, BY should mean by some means.

c is OK, indicates"In the last five years", with can be followed by time adverbials.

And d should be followed by a point in time, not a period of time.

The correct answer is: a

Reason: Because there is "has" in the sentence plus the past participle, this sentence is: present perfect tense.

And because for a while.

So: choose A

The correct answer is a

Because the stem is in the present perfect tense, only the four options are for a while, so you should choose A

c and d are definitely not chosen, and by is followed by the past perfect tense.

Did you brand had as HAD? If so, it is best to choose B. Because the whole sentence is in the past perfect tense, by is the sign that guides the past perfect tense.

If you don't make a mistake, it makes sense to choose A, because the stem is in the present perfect tense, and only the four options are for a while.

47，48 27 ，28，29 64，65

I believe parents will already fill it out. If you read it with a mobile phone, I don't know if there will be a problem with the typesetting, so I ask for adoption.